ImageSharp

Commit Graph

Author	SHA1	Message	Date
Brian Popow	4197e6918e	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part of the options and will be used with the sliding window approach also, so both methods are comparable * removed no longer valid xml comment * attempt fixing the borders * refactoring to improve readability * linear interpolation in the border tiles * refactored processing the borders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	2fcba54a3e	Faster Jpeg Huffman Decoding. (#894 ) * Read from underlying stream less often * Update benchmark dependencies * Experimental mango port Currently broken * Populate table, 64byte buffer Still broken. * Baseline, non RST works * 15/19 baseline tests pass now. * Optimize position change. * 18/19 pass * 19/19 baseline decoded * Can now decode all images. * Now faster and much cleaner. * Cleanup * Fix reader, update benchmarks * Update dependencies * Remove unused method * No need to clean initial buffer * Remove bounds check on ReadByte() * Refactor from feedback	7 years ago
James Jackson-South	0a78af5bdb	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
Anton Firszov	143033660d	extend the CopyBuffers benchmark	7 years ago
Anton Firszov	026df1e4c8	fix license text in CopyBuffers benchmark	7 years ago
Anton Firszov	a7c5295107	benchmark WorkingBufferSizeHint effects	7 years ago
Anton Firszov	15b3b2a82d	improve benchmark: ArrayCopy -> CopyBuffers	7 years ago
Jason Nelson	e9b9e27714	Nits - Benchmarks (#884 ) * Update metadata names * Use WithIterationCount * Format Benchmark documents * Update copyright assignment to Six Labors & Contributors * Update deps * React to Benchmark library update	7 years ago
Anton Firszov	4a0b10080d	rename FromVector4(...) to FromVector4Destructive(...)	7 years ago
Anton Firszov	575a484e61	update benchmark results	7 years ago
Anton Firszov	d2fddce215	extend Resize benchmarks	7 years ago
Robin Krom	ff31b5f8d4	Some changes to make the usages of GDI in benchmarks and tests more stable, this should hopefully prevent "a generic error occurred in GDI+". Hopefully I didn't miss one... (#835 )	7 years ago
Stephan Vedder	5ef3f19c1f	Add missing Non-SIMD implementation	7 years ago
Anton Firszov	0fb40155be	Revert "temporary simplification of build targets" This reverts commit `e9dddc5d4a`.	7 years ago
Anton Firszov	e9dddc5d4a	temporary simplification of build targets	7 years ago
Anton Firszov	2742e1923c	cleanup & undo WIP project setup	7 years ago
Jason Nelson	d3c717a5ce	Update BenchmarkDotNet to 0.11.3	7 years ago
James Jackson-South	8205216dfc	Introduce AffineTransformBuilder	7 years ago
James Jackson-South	e79f26bc7e	Add base becnhmark	7 years ago
Anton Firszov	e059620f19	KernelMap refactor WIP	7 years ago
Anton Firszov	5c65cca162	fix Block8x8FTests.Copy1x1Scale, reorganize TestImages.Jpeg.BenchmarkSuite as a static class	7 years ago
Anton Firszov	2ff5b9c476	drop old benchmark results	7 years ago
Anton Firszov	5ea62adedd	Drop all GetBlockDataReference() usages	7 years ago
Anton Firszov	8c6903873b	improved benchmarks + more benchmark results	7 years ago
Anton Firszov	b32694590d	Even better Copy2x2. Tests: Group together & refactor profiling benchmarks	7 years ago
Anton Firszov	c34e4ff85f	optimize ExifReader.ToEnum<TEnum>(...)	7 years ago
Anton Firszov	c1e4ccb172	improved Block8x8F.Copy2x2Scale	7 years ago
Anton Firszov	941e51cd16	reimplement Block8x8F.CopyTo2x2	7 years ago
Anton Firszov	265f27913c	benchmarks for current state	7 years ago
Anton Firszov	068b2d3d1c	results for DecodeJpeg	7 years ago
Anton Firszov	28b990bd2e	add some benchmark results	7 years ago
Anton Firszov	31369c7435	refactor Vector4 implementation code from PixelOperation<T> to Vector4Converters	7 years ago
Anton Firszov	b87c93e195	benchmakrs	7 years ago
Anton Firszov	0fc01d75f4	run default implementation for small buffers	7 years ago
Anton Firszov	3dde491712	Fixed the benchmarks. All results make sense now! (cherry picked from commit 0d79d4eb58fa1002979f4157eb18c6291a164b06)	7 years ago
Anton Firszov	d5cae6987b	disappointing benchmark for Rgba32 -> Bgra32	7 years ago
Anton Firszov	96d0ae80b9	Rgba32 <-> Argb32 <-> Bgra32	7 years ago
Anton Firszov	8dce0c740c	bitwise conversion + benchmarks WIP	7 years ago
Anton Firszov	53ac430e7e	Feed Configuration to all methods in PixelOperations	7 years ago
Anton Firszov	ca60ecf7f4	pass Configuration to Vector4 converters in PixelOperations	7 years ago
Anton Firszov	6e52e99f37	Adapt Span.CopyTo(...) semantics for all pixel conversion methods in PixelOperations	7 years ago
Anton Firszov	5fda8d38be	rename stuff in Benchmarks	7 years ago
Anton Firszov	8ebe390c32	Rename PackFrom* -> From*: - in PixelOperations - in T4 templates - in tests	7 years ago
Anton Firszov	d4be172dcc	simplify IPixel method names: PackFrom* -> From*	7 years ago
Anton Firszov	45c5e87fa4	drop all PixelExtensions usages in product code, keep in test code for now.	7 years ago
Anton Firszov	6289a87e6d	Better benchmarks for ToVector4() proving that the current API is fine	7 years ago
Anton Firszov	54ccf05794	drop slow Clamp() implementation	7 years ago
Anton Firszov	bf7c933896	minimize ceremonial overhead in BulkConvertByteToNormalizedFloat() and BulkConvertNormalizedFloatToByteClampOverflows()	7 years ago
Anton Firszov	d1d52a7133	FallbackIntrinsics128 + ImageMaths.Modulo* implementations	7 years ago
Anton Firszov	2fcda3cee0	simplify Rgba32.PixelOperations, include benchmark results	7 years ago

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369 Commits (b0f6b73faaaf304e47dec9e58ca6be90b2e740bc)