ImageSharp

Commit Graph

Author	SHA1	Message	Date
Anton Firszov	01ae31cd14	validating tests for Convolution processors	7 years ago
Brian Popow	5283c6db6d	Feature: adaptive histogram equalization (#673 ) * first version of sliding window adaptive histogram equalization * going now from top to bottom of the image, added more comments * using memory allocator to create the histogram and the cdf * mirroring rows which exceeds the borders * mirroring also left and right borders * gridsize and cliplimit are now parameters of the constructor * using Parallel.For * only applying clipping once, effect applying it multiple times is neglectable * added abstract base class for histogram equalization, added option to enable / disable clipping * small improvements * clipLimit now in percent of the total number of pixels in the grid * optimization: only calculating the cdf until the maximum histogram index * fix: using configuration from the parameter instead of the default * removed unnecessary loops in CalculateCdf, fixed typo in method name AddPixelsToHistogram * added different approach for ahe: image is split up in tiles, cdf is computed for each tile. Grey value will be determined by interpolating between 4 tiles * simplified interpolation between the tiles * number of tiles is now fixed and depended on the width and height of the image * moved calculating LUT's into separate method * number of tiles is now part of the options and will be used with the sliding window approach also, so both methods are comparable * removed no longer valid xml comment * attempt fixing the borders * refactoring to improve readability * linear interpolation in the border tiles * refactored processing the borders into separate methods * fixing corner tiles * fixed build errors * fixing mistake during merge from upstream: setting test images to "update Resize reference output because of improved ResizeKernelMap calculations" * using Parallel.ForEach for all inner tile calculations * using Parallel.ForEach to calculate the lookup tables * re-using pre allocated pixel row in GetPixelRow * fixed issue with the border tiles, when tile width != tile height * changed default value for ClipHistogram to false again * alpha channel from the original image is now preserved * added unit tests for adaptive histogram equalization * Update External * 2x faster adaptive tiled processor * Remove double indexing and bounds checks * Begin optimizing the global histogram * Parallelize GlobalHistogramEqualizationProcessor * Moving sliding window from left to right instead of from top to bottom * The tile width and height is again depended on the image width: image.Width / Tiles * Removed keeping track of the maximum histogram position * Updated reference image for sliding window AHE for moving the sliding window from left to right * Removed unnecessary call to Span.Clear(), all values are overwritten anyway * Revert "Moving sliding window from left to right instead of from top to bottom" This reverts commit `8f19e5edd2`. # Conflicts: # src/ImageSharp/Processing/Processors/Normalization/AdaptiveHistEqualizationSWProcessor.cs * Split GetPixelRow in two version: one which mirrors the edges (only needed in the borders of the images) and one which does not * Refactoring and cleanup sliding window processor * Added an upper limit of 100 tiles * Performance tweaks * Update External	7 years ago
James Jackson-South	e59e5315a8	Cleanup General Convolution (#887 ) * Remove multiple premultiplication. * Use in DenseMatrix everywhere. * Make private * Dont convert vector row on first pass * Remove incorrectly assigned alpha. * Remove boxing. * Use correct min row. * Reorder parameters * Correctly handle alpha component. * Update tests * Use dedicated methods over branching.	7 years ago
Daniil Samoylov	c6be724f7e	Pass correct output size in ResizeMode.Min #892 (#893 )	7 years ago
Anton Firszov	2743e87860	fix tests	7 years ago
Anton Firszov	c80501a6e9	benchmark WorkingBufferSizeHint effects	7 years ago
Anton Firszov	eb08150e61	ResizeTests.LargeImage	7 years ago
Anton Firszov	1612f495e2	more robust tests	7 years ago
Anton Firszov	bd8c06ad12	WorkingBufferSizeHintInBytes_IsAppliedCorrectly	7 years ago
Anton Firszov	2859fdd772	utilize CalculateResizeWorkerHeightInWindowBands() which has been renamed from CalculateResizeWorkerWindowCount()	7 years ago
Anton Firszov	07808bf8eb	refactor stuff + implement CalculateResizeWorkerWindowCount()	7 years ago
Anton Firszov	7be9d82941	basic sliding window implementation (semi-stable state)	7 years ago
Anton Firszov	53892deeb7	ResizeWindow refactor 4	7 years ago
Anton Firszov	1362f0d0f5	ResizeWindow refactor 3	7 years ago
Anton Firszov	1a13941836	ResizeWindowOld	7 years ago
Jason Nelson	fca697206a	Update metadata names (#879 )	7 years ago
Anton Firszov	0387964192	introduce [WithBasicTestPatternImages]	7 years ago
Anton Firszov	a1479ee09b	drop FileTestBase usage in ResizeTests	7 years ago
James Jackson-South	bbb739ba93	Fix Color Filters (#806 ) * Use Matrix5x4 and fix Hue Filter * Update test references. Fix #802 * Increase tolerance to handle xplat variance. * Rename to ColorMatrix	7 years ago
James Jackson-South	56ad62dc78	Fix #787	7 years ago
James Jackson-South	324ac5a6e2	Bump lower tolerance for Box.	7 years ago
Anton Firszov	d57f45ceeb	less strict tolerance for 32bit .NET + NearestNeighborResampler, more strict tolerance for the rest	7 years ago
Anton Firszov	5163bbbad0	revisted test cases in Resize_WorksWithAllResamplers	7 years ago
Anton Firszov	8375745e99	add more test cases to Resize_WorksWithAllResamplers	7 years ago
Anton Firszov	56dda26e3b	wip	7 years ago
Anton Firszov	3538e9839f	test code cleanup	7 years ago
Anton Firszov	90a2f32f3a	update submodule, skip debug-only test case	7 years ago
Anton Firszov	0c7aee9f5d	robust ResizeKernelMap calculations using TolerantMath	7 years ago
Anton Firszov	7fcae0351f	introduce TolerantMath	7 years ago
Anton Firszov	86125550ad	cherry pick test cases from auto-generated set	7 years ago
Anton Firszov	28bc47c6ec	additional extensive testing	7 years ago
Anton Firszov	3641b30305	cleanup & undo WIP project setup	7 years ago
James Jackson-South	450a417d34	Add Skew methods and tests.	7 years ago
Anton Firszov	570fd5e1ea	format, docs, cleanup	7 years ago
Anton Firszov	3e64863fba	MosaicKernelMap works!	7 years ago
Anton Firszov	72a6a7e321	preparations for implementing MosaicKernelMap	7 years ago
Anton Firszov	ca61df8e64	rename KernelMap to ResizeKernelMap, introduce MosaicKernelMap, move source code	7 years ago
Anton Firszov	d3af531255	refactor KernelMap initialization	7 years ago
James Jackson-South	adc9d76481	Add Rotate(degrees, origin)	7 years ago
James Jackson-South	d992d85ef0	Match APIs	7 years ago
James Jackson-South	1705a5a9dc	Update dependencies	7 years ago
James Jackson-South	f6ed06bb52	Remove "Matrix" suffix	7 years ago
Anton Firszov	eed22c56ca	fixed a bug in KernelMap caused by overlapping memory areas	7 years ago
Anton Firszov	42b1bd115d	printing ReferenceKernelMap	7 years ago
Anton Firszov	fb6c407026	Rotation around custom center point. Rename PrependCenteredRotationRadians back to PrependRotationRadians	7 years ago
Anton Firszov	e43e09999d	Make AffineTransformProcessor and AffineTransformBuilder API more flexible	7 years ago
Anton Firszov	9d71fd381d	extend ProjectiveTransformBuilder	7 years ago
Anton Firszov	1f330306db	Translation, Scale -> ProjectiveTransformBuilder	7 years ago
Anton Firszov	9183956813	rename methods + extend API	7 years ago
Anton Firszov	9afad9bd7c	add more tests	7 years ago

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272 Commits (01ae31cd146a89c5f93fce35a31041cdcf4d132b)