Convert Mask To Polygon Python

I have a data set with points, each of which is associated with one of 7 "networks". Streamgraph is a type of stacked area graph which is displaced around a central axis, resulting in a flowing, organic shape. To Vertices Changes the existing polygon component selection to the vertices that are associated with the components originally selected. Town nodes and Polygons that fail to confine the Name within an area. 調整した終わったら、選択している奴を一個ずつ自分のアトリビュートのTessellationの値を使ってコンバートしていく. Geocode country polygon based on country name [closed] How can I generate tiles using shp file? Mapnik PGRaster Plugin creating 8x8 tiles with visible boundaries. QGIS has many fantastic plugin's, but one of these I use most in my day to day work when creating maps is the Mask tool. The following are code examples for showing how to use shapely. Now, I’m not advocating you be that lazy, so let’s look at a more practical example that would take time to convert to Python. The IP addreass can be declared by data type System. Surface to the same pixel format as the one you use for final display, the same one created from pygame. Uncheck Selected graphics only if you want to convert all graphics. Google Maps - Polygon. Please see this page to learn how to setup your environment to use VTK in Python. The size of BW (in rows, columns) is given in the 2-element BWSIZE. windowing a grid to a polygon to make a new smaller grid) or masking (i. Masks are an array of boolean values for which a condition is met (examples below). Sometimes, for reasons unknown to me, this cannot be done from the first time. They are extracted from open source Python projects. Surface (raster and TIN) creation and analysis. Performs alpha blending and masking with Python, OpenCV, NumPy. Convert raster data to a ESRI polygon shapefile and (optionally) a SpatialPolygonsDataFrame - polygonizer. Extract outline of polygons defined by gridded mask. Convert shp to a raster based on the specifications of mask. ipaddress provides the capabilities to create, manipulate and operate on IPv4 and IPv6 addresses and networks. The Delaunay triangulation polygons can be created with the function of the same name under menu Vector | Geometry Tools. Faster installation for pure Python and native C extension packages. If you are converting text to annotation, specify a reference scale and choose whether to include any point, line, or polygon graphics in the output annotation feature class. tolist ([fill_value]) Return the data portion of the masked array as a hierarchical Python list. If you have ever worried or wondered about the future of PIL, please stop. These are fully independent, compilable examples. A subnet means, that you divide an IPv4 address in a front part and a back part. Have you some ideas ? Can you share with me? I am trying to convert RGB to HSL and use the method ( from the tutorial of Finding the Brightest Spot in an Image using Python and OpenCV). For example, to create a square building, you would digitize the four corners, using any combination of methods for creating vertices or segmen. bezier are curves not surfaces!. Polygons can be created from a file that contains the points (Longitude and Latitude) that make up the vertexes of each polygon boundary, and the order in which to draw them. The Cutout tool is engaged. same extent and resolution). It would be appreciated if there are any Python VTK experts who could convert any of the c++ examples to Python!. Thank you for all the information. This section describes in details the parameters available for this application. This is useful for research or mapping in which there is a specific Study Area you wish to symbolize that doesn’t match up to political or geographic boundaries. The PNG output is 2048x2048, and draws the selected mode (biomes, polygons, 2d slopes, etc. That is, they operate on numbers (normally), but instead of treating that number as if it were a single value, they treat it as if it were a string of bits, written in twos-complement binary. If you are converting text to annotation, specify a reference scale and choose whether to include any point, line, or polygon graphics in the output annotation feature class. I want to create a new dataset same as coco format, and now I have converted mask binary image to RLE format by using encode function in mask. This is the simplest method in object tracking. by the grid cell edges. The arcgis. The following are code examples for showing how to use matplotlib. zeros_like(img) # filling pixels inside the polygon defined by "vertices" with the fill color cv2. My code so far:. The new buffer protocol is supported for Python 2. Use the roifill function to fill in a specified region of interest (ROI) polygon in a grayscale image. For more advanced tricks, the paste method can also take a transparency mask as an optional argument. Chegg home. MaskedArray. Use this to convert svg paths into polygons suitable for use as CSS Shapes. Accepted Instances. Online Voxelizer. python: turn polygon into mask array I have a polygon which I want to turn into a mask array, such that all points that fall inside/outside the polygon are True/False. This feature is not available right now. Finding the centre of of a polygon can be useful for many geomtrical analysis and processing techniques. How to clip multiple rasters for one specific area in ArcGIS 10. Maybe a file size issue? Inputs were source_dem, output folder, output base name, split method of polygon features, output format tiff (and ENVI, and GRID), Resampling nearest, split polygon feature class was a ~200 feature polygon shape file, other options were set to units:meters, cellsize specified same as imput DEM, and no data -9999. All of these operators share something in common -- they are "bitwise" operators. # Convert catchment raster to vector and combine with soils shapefile # -----# Read soils shapefile import geopandas as gpd from shapely import geometry, ops soils = gpd. Masks in python. ) Convert a text layer to shapes on a shape layer by using the Create Shapes From Text command. Above formats can run on Detectron. There are python packages available to work with Excel files that will run on any Python platform and that do not require either Windows or Excel to be used. If that is not enough, then I would suggest to public a new question out of your post, perhaps with more context, code snippet and, above all, YOUR GOAL. Converting surfaces is a good way to model in NURBS for a polygonal. rasterstats is a Python module for summarizing geospatial raster datasets based on vector geometries. The BitmapImage class can read X11 bitmaps from strings or text files: bitmap = BitmapImage(data=BITMAP) bitmap = BitmapImage(file= "bitmap. Finding out if a certain point is located inside or outside of an area, or finding out if a line intersects with another line or polygon are fundamental geospatial operations that are often used e. unary_union. Jurgen (view profile) but would prefer to work with polygon data instead of binary mask (more exact). Using 4000 or 8000 points can be slow. based on IP and Subnet Mask #Convert mask to binary string mask_octets_padded = []. You can vote up the examples you like or vote down the ones you don't like. The area of an irregular convex polygon can be found by dividing it into triangles and summing the triangle's areas. So, I tried converting the polyline to a line raster, and was then trying to create a land-sea mask. A point is inside a polygon if it has a non-zero winding number (defined as the number of times that the curve defining the polygon travels around the point). It the arithmetic mean position of all the points that make up the polygon. Figure 3 provides an example. An easy way to do this is to add an additional field to the input feature class and calculate it to the inverse area of the polygons; then use this field as the Priority field when running this tool. raster polygons land-mask. A variable in the event chain (listener-b). When working with data arrays masks can be extremely useful. Uncheck Selected graphics only if you want to convert all graphics. Path to Polygon Converter. The command-line interface allows for easy interoperability with other GeoJSON tools. You can create a mask from any surfaces with transparency. Welcome to the new Unreal Engine 4 Documentation site! We're working on lots of new features including a feedback system so you can tell us how we are doing. The class of BW is logical with 1 inside the set of XY polygons and 0 outside. Once you learn functions of contours, you can do plenty of things like find centroid of this object and use it to track the object, draw diagrams just by moving your hand in front of camera and many other funny stuffs. Libraries to use: [code]import cv2 import numpy as nm [/code]Now reading the image (though you have not asked this): * converting to gray scale during input : [code]img=cv2. The following are code examples for showing how to use shapely. Example of Inheritance in Python. Geocode country polygon based on country name [closed] How can I generate tiles using shp file? Mapnik PGRaster Plugin creating 8x8 tiles with visible boundaries. x have not yet been ported to Python 3. To my surprise the pure Python version was just about as quick as the OGR version. A point is inside a polygon if any infinite ray beginning at the point intersects with an odd number of polygon edges (known as the even-odd rule). Convert polygon to points¶ This recipe converts a polygon to points. For example, to create a square building, you would digitize the four corners, using any combination of methods for creating vertices or segmen. MPOLY2MASK Convert multiple region-of-interest polygons to a mask. x) The Python 3. Introduction. I am trying to create a mask of a county, so that it will mask all other features including rasters, points and polygons that are not within the internal boundary area of the county. Then for each contour, we draw it on the mask image filled with white color. Alternatively, you may have a complex Python object that can somehow be serialized to fit into a standard database column type. How to clip multiple rasters for one specific area in ArcGIS 10. If the component is not in a state to commit then an exception is thrown. fillPoly(mask, vertices, 255) # returning the image only where mask pixels are nonzero masked = cv2. the polygons are arranged as n rows by n columns. See in this link. x branch is a revision of the language and offers many improvements over Python 2. the polygons defined by a gridded mask, where the mask is defined pcolor-style, i. Sometimes, for reasons unknown to me, this cannot be done from the first time. I have a data set with points, each of which is associated with one of 7 "networks". I can't get it to run the calculations and the display isn't working properly. My code so far:. #python #geojson #geometry - convert-geojson-to-wkt. There is no single geoprocessing tool that automatically performs this task. When the mask is a bitmap or polygon layer it can be in a different projection than the input raster data and the mask will be reprojected on-the-fly to determine the pixels to alter. If the Identify and store polygon neighboring information check box is unchecked (neighbor_option is set to IGNORE_NEIGHBORS in Python), the polygon neighboring relationship will be ignored. So here is the method:. See Regular Polygon Definition. BW = poly2mask(xi,yi,m,n) computes a binary region of interest (ROI) mask, BW, of size m-by-n, from an ROI polygon with vertices at coordinates xi and yi. A multipart polygon will become a multipart line in the output. This tutorial explains OpenCV Blob Detector and its various parameters (Thresholds, Area, Circularity, Inertia and Convexity. Masks are an array of boolean values for which a condition is met (examples below). In this case, click on Randomly in the upper panel. Polygons are made of straight lines, and the shape is "closed" (all the lines connect up). In Python, when you create an object that you want to appear on screen, you create a class. Valid kwargs are:. The result of using the Extract by Mask tool is similar to that of setting the Mask environment, except that the input mask is only used on the immediate instance, while a mask set in the environment is applied to all tools until it is changed or. Assign Polygons to Polygon Groups. The Delaunay triangulation polygons can be created with the function of the same name under menu Vector | Geometry Tools. This allows me to either completely, or partially, mask the base map outside my area of interest, so the user can concentrate fully on the features you have mapped within…. These features can be line, point, polygon, Multi-Line string and multi-polygon. Above formats can run on Detectron. polygon) I cannot successfully install scikit-image or PIL into the Python interpreter. ) from registry. I can't get it to run the calculations and the display isn't working properly. mean(im,mask = mask) Remember, if you are trying for color matching or color based object tracking, first convert image to HSV space, because HSV is more better representation of color that RGB space. Maybe a file size issue? Inputs were source_dem, output folder, output base name, split method of polygon features, output format tiff (and ENVI, and GRID), Resampling nearest, split polygon feature class was a ~200 feature polygon shape file, other options were set to units:meters, cellsize specified same as imput DEM, and no data -9999. You will need a computer with internet access to complete this lesson and the spatial-vector-lidar data subset created for the course. To get the pixel map, call load() on an image. we will apply a mask to the original RGB I’ll spare you the details for how I made this polygon — take a. Clip raster by polygon in ArcGIS, how to Clip raster by polygon in ArcGIS Clip raster with polygon and Extract raster by Mask - Duration: How To Convert pdf to word without software. How to convert latitude/longtitude columns in CSV to Geometry Column using Python. Added topil() and frompil() methods for converting to and from PIL images. Learning Objectives. open a shapefile in Python using geopandas - gpd. With some product specifications, polygons may need to be captured as point features if they do not meet a requirement for the area features. For those of you creating python code, you can easily share them with other Flame Artists. For each row returned from the table, this function updates the value of the field by evaluating the expression using the Python eval function. Rasterio: access to geospatial raster data¶. Contents: arcgis. These limitations have historically meant that one needs to be an expert. You can create a mask from any surfaces with transparency. This quick guide shows you how to find the centre of a polygon in python. Download C++ and Python example code. fillPoly(mask, vertices, 255) # returning the image only where mask pixels are nonzero masked = cv2. An analysis mask must first be created if you do not already have one. Pre-trained models and datasets built by Google and the community. That contains name, CRS (coordinate reference system) and features. I'll try to get a code in Matlab and try to convert to Python. An easy way to do this is to add an additional field to the input feature class and calculate it to the inverse area of the polygons; then use this field as the Priority field when running this tool. Welcome to the new Unreal Engine 4 Documentation site! We're working on lots of new features including a feedback system so you can tell us how we are doing. For this, you use the Feature Outline Masks tool to convert the geometry of the label outlines to polygons in a new polygon feature. You will be prompted for a filename, and a mask file will be created for each layer that contains a mask figure and whose save flag is turned on (see section 2. Home > Python > Dear all, I would like to know how to convert a list of points into a polygon shapefile (esri). tif Punch a hole. In the bottom left-hand corner of the status bar there is a button to toggle how the selection is displayed. The following are code examples for showing how to use shapely. To get the pixel map, call load() on an image. 6 and up in CPython. Extracts the cells of a raster that correspond to the areas defined by a mask. The aim of this post is to build a custom Mask R-CNN model that can detect the area of damage on a car (see the image example above). My code so far:. Each input polygon boundary will be written out as an enclosed line feature. Spatial data conversion, analysis, topological cleaning, sampling. Finding out if a certain point is located inside or outside of an area, or finding out if a line intersects with another line or polygon are fundamental geospatial operations that are often used e. Improve this sample solution and post your code through Disqus. Illustration OutRas = ExtractByMask(InRas1, InRas2) Usage. Now, we may want to “align” a particular. Here we see an SVG element using Bézier curves: We can very simply convert this to a by sampling the path at regular intervals, using getPointAtLength(): As seen above, sampling may miss areas important to the shape of the object. See the Pen JavaScript Convert Hexadecimal to ASCII format - string-ex-28 by w3resource (@w3resource) on CodePen. The conventional wisdom, especially in the geospatial world, states if you need to do a large number of costly calculations it's worth using C because Python will be much slower. BW = poly2mask(xi,yi,m,n) computes a binary region of interest (ROI) mask, BW, of size m-by-n, from an ROI polygon with vertices at coordinates xi and yi. __call__ ¶ Returns the atom if it is alive or None if the atom is dead. When you are finished positioning and sizing the polygon, create the mask by double-clicking, or by right-clicking inside the region and selecting Create mask from the context menu. I found if tolerance is set to 0, then the resulting polygon is very different from the original one. These are fully independent, compilable examples. Wings 3D is an advanced subdivision modeler that is both powerful and easy to use. Added topil() and frompil() methods for converting to and from PIL images. based on IP and Subnet Mask #Convert mask to binary string mask_octets_padded = []. Thank you in ad. MultiPolygon(). convert cidr to subnet mask in python. 多通道图:a single sequence that is the concatenation of the sequences for all bands. If your study area contains only one polygon you can use boundary. You could then use ReadAsArray to turn the rasterized polygon into a numpy array. And for those of you who are not Python savvy, you can use these scripts simply by copying them into a shared directory. - Added Undo and Redo features except the pixels tools. The pixel buffer is writeable. This is on how to a convert any image to gray scale using Python and OpenCV. BW = poly2mask(xi,yi,m,n) computes a binary region of interest (ROI) mask, BW, of size m-by-n, from an ROI polygon with vertices at coordinates xi and yi. gdal -clip mask. xy is a numpy array with shape Nx2. RenderMan Pro Server 14 introduces prman_for_python, a Python plugin module that allows you to build Pixar's RenderMan into your Python applications. This section covers the use of Boolean masks to examine and manipulate values within NumPy arrays. In this mask, the value 255 indicates that the pasted image is opaque in that position (that is, the pasted image should be used as is). QGIS has many fantastic plugin's, but one of these I use most in my day to day work when creating maps is the Mask tool. You can create a mask from any surfaces with transparency. Nodata value, leave as none to take the nodata value from input [string] Defines a value for the no-data areas of the input raster. (See Create shapes or masks from text characters. findContours() to find the contours corresponding to the outlines of the faces of the dice. C++ Examples¶. I want to create a numpy 2D array which represents a binary mask of a polygon, using standard Python packages. So you load up your images normally, and then create the masks for them. There is significant overlap in the examples, but they are each intended to illustrate a different concept and be fully stand alone compilable. 248 (that the user inputted) to a wildcard mask of 0. You can vote up the examples you like or vote down the ones you don't like. How to Plot Polygons In Python. All your data is fast and securely processed on your local machine; no downloads or uploads needed. After the initial release, I got tons of great ideas from all of you, along with some very useful code submissions either in the comments or by a pull request on the Github page. mean(im,mask = mask) Remember, if you are trying for color matching or color based object tracking, first convert image to HSV space, because HSV is more better representation of color that RGB space. I figured the point-in-polygon calculation would be the most costly part. Only True relationships are shown in this illustration. A multipart polygon will become a multipart line in the output. Now, I’m not advocating you be that lazy, so let’s look at a more practical example that would take time to convert to Python. Deciding if a Point is Inside a Polygon - Pure Python This is not a particularly tricky problem, but there wasn't a Python solution on the net when I went looking. The Python Imaging Library is only required if these methods are called. The OpenMesh Python bindings are are tightly integrated with numpy and are implemented using pybind11. Thus far I have been using GDAL and Fiona to read in the shape files and NetCDF4 to load the data files. Above formats can run on Detectron. The QGIS Python API and the QGIS C++ API are the ultimate references for plugins creators. Convert raster to polygon. For instance, one may click the picture of a book from various angles. I am converting an old Fortran Code to Python, Need to design Objects (Classes) and make a GUI front end to point to DATA repositories, as well as develop a simple GIS display & Polygon edit tool Visually display a polygon and allow the line vertices to be moved and updated in source file. Depending on the desired output, there are various options to convert a point file to a polygon file. Next: Write a JavaScript function to find a word within a string. Convert NURBS to Ploygonするときにアトリビュートの設定一括変更後、ビュー見ながら微調整。 2. tif -mask 255,0,0 -reverse in. That contains name, CRS (coordinate reference system) and features. Using the "-r" switch it will on-the-fly project to the image's projection before extracting a value from the raster. Find out how to add a mask that shows or hides an entire layer, add a mask that shows the contents of a shape, change mask opacity or feather mask images, and more. BW = poly2mask(xi,yi,m,n) computes a binary region of interest (ROI) mask, BW, of size m-by-n, from an ROI polygon with vertices at coordinates xi and yi. Masking a raster using a shapefile¶. An image annotation tool to label images for bounding box object detection and segmentation. A multipart polygon will become a multipart line in the output. C++ Examples¶. The main function you will use when converting a string is the strptime function. I’ll use the psycopg2 Python module to access the database and import data, manipulate data, make a query, and then extract the data. I want to find the image that exists violent sunlight(or exposure field) in many images. You can vote up the examples you like or vote down the ones you don't like. To load the polygon to QGIS the following steps are performed: Click Add Vector Layer from the Layer > Add Layer menu, in the pop-up window click on Explore. This tool will use a tiling process to handle very large datasets for better performance and scalability. Pillow tutorial shows how to use Pillow in Python to work with images. With some product specifications, polygons may need to be captured as point features if they do not meet a requirement for the area features. Maybe a file size issue? Inputs were source_dem, output folder, output base name, split method of polygon features, output format tiff (and ENVI, and GRID), Resampling nearest, split polygon feature class was a ~200 feature polygon shape file, other options were set to units:meters, cellsize specified same as imput DEM, and no data -9999. Once a masking relationship has been established between a feature class representation in your map and a polygon feature class, you can remove portions of feature representations from view by drawing masks. By default, only the selected graphics will be converted. I figured the point-in-polygon calculation would be the most costly part. Creating training masks with the solaris python API¶. Polygon footprints; Polygon outlines; Polygon contact points; Road network masks; Tiling imagery and labels using the solaris Python API. Have you some ideas ? Can you share with me? I am trying to convert RGB to HSL and use the method ( from the tutorial of Finding the Brightest Spot in an Image using Python and OpenCV). Although scikit-image and PIL have great functions to help convert polygon points into a binary map (e. Constructor:. I am displaying each polygon vertices and coordinates. The idea is that you can calculate the mean or max height value for all pixels that fall in each NEON site. In the bottom left-hand corner of the status bar there is a button to toggle how the selection is displayed. R but no correspective python program unfortunately. In Python, when you create an object that you want to appear on screen, you create a class. def roi(img,vertices): # blank mask: mask = np. When creating a polygon, the last record relating to a particular polygon has to be identical as the first record in order to “close the loop”. I thought I found the perfect solution ( SciPy Create 2D Polygon Mask ), but for some reason this doesn't work!. Set the value of the cells of the raster that represent the polygon to the desired value. OSMnx is a Python package for downloading administrative boundary shapes and street networks from OpenStreetMap. The size of BW (in rows, columns) is given in the 2-element BWSIZE. If you are interested in reviewing or adopting this textbook, contact Tom Sumner at FBA. In particular, the submodule scipy. There is significant overlap in the examples, but they are each intended to illustrate a different concept and be fully stand alone compilable. In this article, I am explaining how to convert multipolygon geometry into polygon geometry in postGIS with examples. Posts about mask written by nkshaw23. The functions and classes in this module make it straightforward to handle various tasks related to IP addresses, including checking whether or not two hosts are on the same subnet, iterating over all hosts in a particular subnet, checking whether or not a string represents a valid. In this post I will use the PyShp library along with the PyProj library to reproject the local authority boundaries of Ireland, in Shapefile format, from Irish Transverse Mercator to WGS 84 using Python. Go find them on your computer, read the source code and mine them for API tricks. But I don't know how to convert mask binary image or RLE format to polygon format, someone. A multipart polygon will become a multipart line in the output. The main function you will use when converting a string is the strptime function. Random, Relaxed, Square, Hex are about how the map is divided up into polygons. FME Objects Python module. OpenCV Library from Python • We will use Python (which is trivial to learn) to call on modules from the OpenCV library for homework assignments. You can do this by dragging a Sprite Asset from the Project view A view that shows the contents of your Assets folder (Project tab) More info See in Glossary onto the Polygon Collider 2D component in the Inspector A Unity window that displays information about the. Useful for translating a geometry in space or flipping coordinate order. Drawing a mask path is similar to drawing a shape path. Open Creates a curve with disconnected start and end points. How to polygonize raster to shapely polygons. Turfik is implementation of Turf. mask_creator. Instructor resources including problem solutions and exam questions. Download C++ and Python example code. Reduce is a really useful function for performing some computation on a list and returning the result. The size of BW (in rows, columns) is given in the 2-element BWSIZE. Description [Please provide a general introduction to the issue/proposal. They are extracted from open source Python projects. In particular, the submodule scipy. With some product specifications, polygons may need to be captured as point features if they do not meet a requirement for the area features. roifill smoothly interpolates inward from the pixel values on the boundary of the polygon by solving Laplace's equation. geometry module¶. Assuming no critical problems are found prior to 2019-10-14, no code changes are planned between now and the final release. An easy way to do this is to add an additional field to the input feature class and calculate it to the inverse area of the polygons; then use this field as the Priority field when running this tool. For this, you use the Feature Outline Masks tool to convert the geometry of the label outlines to polygons in a new polygon feature. Questions Tagged With land-mask How can I convert the land-polygons to a raster land mask? 16 Nov '15, 17:38 rosstrafford 26. Surface (raster and TIN) creation and analysis. convert write_mask. i dont know what i would do?could you help me. Set the PROXYGRAPHICS system variable to 0. 6 and up in CPython. • This should allow students to get into doing computer vision sooner and to using more advanced operators than you have time to code yourselves. Thank you in ad. When converting overlapping polygons, you may want the polygons with the smallest area to be assigned to a cell. After completing this tutorial, you will be able to: Dissolve polygons based upon an attribute using geopandas in Python. In this article, I am explaining how to convert multipolygon geometry into polygon geometry in postGIS with examples. Adapted from matplotlib/examples. Once the polygon has been drawn, select it with the Pick tool. First you need to have the points, lines or area delimited by a polygon in Google Earth, and save it in kml or kmz format. The registry is dead! Long live the registry! Yes, for years users could download content to extend GIMP in various ways (plugins, scripts, brushes, etc. First, you may convert to gray-scale, but then you have to consider that grayscale still has at least 255. The following options are available in a submenu when you select Select > Convert Selection and can be used to convert an existing polygon component selection to vertices, edges, faces, and so on. poly2mask closes the polygon automatically, if the polygon is not already closed. You can vote up the examples you like or vote down the ones you don't like. When you have a polygon layer and a point layer - and want to know how many or which of the points fall within the bounds of each polygon, you can use this method of analysis. The following are code examples for showing how to use shapely. how does one go about masking multiple areas of a single image? The tool will not allow me to add more than one polygon mask area per polygon tool, and I haven't been able to merge multiple polygon mask tools together as desired, only one will be active at a time. An easy way to do this is to add an additional field to the input feature class and calculate it to the inverse area of the polygons; then use this field as the Priority field when running this tool. The old buffer protocol is also supported for Python 2. How To: Convert a point feature class to a polygon feature class Summary. This is the best place to expand your knowledge and get prepared for your next interview. Clipping rasters can be trivial with a desktop GIS like QGIS or with command line tools like GDAL.