ImageSharp

Commit Graph

Author	SHA1	Message	Date
Stefan Nikolei	5de26525fe	Convert CodeBase to collection Expressions	11 months ago
Stefan Nikolei	18b8b662e9	Use Target Type new only when apparent	11 months ago
Stefan Nikolei	57f5966fe7	use Explicit Types and Target Type new	11 months ago
Ynse Hoornenborg	34891da46b	Add SyncChannels option	4 years ago
Ynse Hoornenborg	976747490c	Implement auto level processor	4 years ago
James Jackson-South	0e9a066195	FS Namespaces and Implicit Global Usings	4 years ago
James Jackson-South	97baeaf438	Update all files	4 years ago
James Jackson-South	a8d269f35a	Better test	5 years ago
James Jackson-South	2ce4e2166c	Fix using	5 years ago
James Jackson-South	0110ff23ef	64 bit only. Huge image	5 years ago
James Jackson-South	5ceba7116c	Ensure cdfMinSpan is cleared before use.	5 years ago
Brian Popow	b49313e1dc	Use StringComparison.Ordinal and fix some minor warnings	5 years ago
Brian Popow	e06481c92b	Add additional test categories	5 years ago
Brian Popow	82a5a61f3d	Add global histogram equalization test which compares result to reference output	6 years ago
James Jackson-South	874115bd0a	Update license	6 years ago
James Jackson-South	6183dd8c13	Update source license info.	6 years ago
Sergio Pedri	94c4660d10	Switched pixel format type constraint to unmanaged	6 years ago
James Jackson-South	8cd722cfc5	Revert `using` declaration changes for until we establish guidelines.	6 years ago
Brian Popow	51230a776f	Change WithTestPatternImageAttribute to WithTestPatternImagesAttribute	6 years ago
Brian Popow	f60bc937de	Use using declarations to reduce nesting	6 years ago
Brian Popow	7b052c8076	Fix stylecop warnings in the test project	6 years ago
Brian Popow	2bd1df92ba	Change test images for Issue984 to be non transparent	7 years ago
Brian Popow	9942e1f64b	Change the default value of clipLimit	7 years ago
Anton Firszov	1845f5e142	debug save the output for Issue984	7 years ago
Brian Popow	d15022007f	Add regression test for Issue984	7 years ago
Simon Cropp	bcbd4726a6	use var where apparent (#972 ) * use var where apparent * use var where apparent * should use Rgb24	7 years ago
Simon Cropp	270a073fc6	Cleanup (#965 ) * redundant () * redundant stirng interpolation * use method groups * redundant unsafe * redundant qualifiers * redundant () * redundant init * redundant init * redundant casts * redundant casts	7 years ago
Anton Firszov	394174bb53	refactor HistogramEqualization	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	ade60bd284	Cleanup and remove double cast.	8 years ago
popow	2b7f982120	moved extension to the processing namespace and the processor accordingly into Processors namespace	8 years ago
popow	d5cc405212	luminance levels is now a parameter of the constructor, defaults to 65536	8 years ago
popow	a09fa9c618	moved test to Normalization folder	8 years ago
popow	bba2116666	SixLabors.ImageSharp.Processing.Contrast -> SixLabors.ImageSharp.Processing.Normalization	8 years ago
popow	72a4ee4828	added support for 16 bit greyscale	8 years ago
popow	68d13b6ecb	added HistogramEqualizationTest	8 years ago

33 Commits (f72035a1566a1b8b078a7adcaeaa08053dc59937)