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2. Hough transform - Wikipedia

   en.wikipedia.org/wiki/Hough_transform

   The Hough transform (/ h ʌ f /) is a feature extraction technique used in image analysis, computer vision, pattern recognition, and digital image processing. [1] [2] The purpose of the technique is to find imperfect instances of objects within a certain class of shapes by a voting procedure.

3. Homography (computer vision) - Wikipedia

   en.wikipedia.org/wiki/Homography_(computer_vision)

   GIMP Tutorial – using the Perspective Tool by Billy Kerr on YouTube. Shows how to do a perspective transform using GIMP. Allan Jepson (2010) Planar Homographies from Department of Computer Science, University of Toronto. Includes 2D homography from four pairs of corresponding points, mosaics in image processing, removing perspective ...

4. GIMP - Wikipedia

   en.wikipedia.org/wiki/GIMP

   GIMP's native format XCF is designed to store all information GIMP can contain about an image; XCF is named after the eXperimental Computing Facility where GIMP was authored. Import and export capability can be extended to additional file formats by means of plug-ins. XCF file size is extended to more than 4 GB since 2.9.6 and new stable tree 2 ...

5. Texture mapping - Wikipedia

   en.wikipedia.org/wiki/Texture_mapping

   Texture mapping can both refer to the task of unwrapping a 3D model, the abstract that a 3D model has textures applied to it and the related algorithm of the 3D software. Texture map refers to a Raster graphics also called image, texture. If the texture stores a specific property it's also referred to as color map, roughness map...

6. Comparison of graphics file formats - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_graphics...

   Lossy and lossless bi-orthogonal transform Raster 32 bpc No Yes Yes Yes Yes No No Yes Yes Yes ILBM: Optional run-length encoding: Raster 8 bpc Yes No Yes Yes No Yes, Palette-shifting: No No Yes No JPEG: Lossy (and partly lossless), DCT, RLE, and Huffman predictive nearest neighbor Raster 8 bpc No No Yes Yes No No No Yes No No (see unofficial ...

7. Perspective control - Wikipedia

   en.wikipedia.org/wiki/Perspective_control

   It is commonly suggested [citation needed] to correct perspective using a general projective transformation tool, correcting vertical tilt (converging verticals) by stretching out the top; [4] [5] [6] this is the "Distort Transform" in Photoshop, and the "perspective tool" in GIMP.

8. Blend modes - Wikipedia

   en.wikipedia.org/wiki/Blend_modes

   Use the result of the first transformation as the new bottom layer; Put the result of the second transformation as the new top layer; Use the initial top layer as the mask on the new top layer. (This assumes that the mask may be colored, with its R, G, B channels masking the channels of the image independently.

9. Raster graphics editor - Wikipedia

   en.wikipedia.org/wiki/Raster_graphics_editor

   Darktable, a raw photo post-processing application GIMP, a feature-rich general-purpose raster graphics editor. A raster graphics editor (also called bitmap graphics editor) is a computer program that allows users to create and edit images interactively on the computer screen and save them in one of many raster graphics file formats (also known as bitmap images) such as JPEG, PNG, and GIF.