resize

Commit Graph

Auteur	SHA1	Message	Date
nfnt	579058ccc0	Test for color-casts due to wrong alpha-channel scaling.	il y a 9 ans
minodisk	87f723015c	Test same color with some color modes	il y a 9 ans
minodisk	f430a41192	Fix wrong color with RGBA input	il y a 9 ans
nfnt	563154816f	Remove debugging directives.	il y a 9 ans
nfnt	5a6676c19e	Add test case for input data with pre-multiplied-alpha.	il y a 9 ans
jst	618f7ff07a	Add test case for correct pixel coordinates after resize.	il y a 10 ans
Charlie Vieth	b09281bd36	Update benchmarks to focus on conversion performance. Benchmark each interpolation function for RGBA and YCbCr images. Reduce the image size used when benchmarking to reduce the influence of memory performance on results.	il y a 10 ans
jst	9485f5475a	Return input image if output dimensions equal input dimensions.	il y a 10 ans
jst	20c6afea04	Remove unnecessary benchmark	il y a 10 ans
jst	220cad3343	Add simple test case for input image with non-trivial bounds.	il y a 10 ans
jst	016a61cd31	Optimize data-locality for a huge increase in processing speed. This is a complete rewrite! The tight scaling loop needs data locality for optimal performance. The old version used lots of pointer redirections to access image data which was bad for data locality. By providing the complete loop for each image type, this problem is solved. Unfortunately this increases code duplication but the result should be worth it: I could measure a ~6x speed-up for certain test cases!	il y a 10 ans
jst	446eea2f7b	Remove LUT based filters. Caching kernel weights makes using the LUT based approach obsolete. Now they seem to be even slower than their counterparts.	il y a 11 ans
jst	8f586c4f06	Add benchmarks to compare execution times. Run "go test -bench LargeJpegThumb" to benchmark all functions at once.	il y a 11 ans
jst	252ccc84a2	Add benchmarks for Lanczos3Lut to compare it with Lanczos3 performance.	il y a 11 ans
jst	da95f74904	go fmt	il y a 12 ans
jst	84039c403b	Test for correct canvas size.	il y a 12 ans
Jason Summers	3d9094eb9e	Center the resized image on the canvas, instead of shifting it slightly	il y a 12 ans
jst	3e06045c3f	Speed up computation: Try to avoid Image.At() as much as possible -> specialized color access for some image types	il y a 12 ans
jst	e548f52385	Blur input image during downscaling by scaling the filter kernel to prevent moires in the output image	il y a 12 ans
jst	d0b2b9bc39	Added MitchellNetravali, changed Lanczos a bit	il y a 12 ans
jst	3fc31c95cc	Kernel simplified	il y a 12 ans
jst	339b8fd43a	Speed up calculation by avoiding dynamic casting	il y a 12 ans
jst	9041d4db18	Function signature changed again, no need for multiple return value	il y a 12 ans
jst	6b67b636b8	Function signature changed again, no need for multiple return value	il y a 12 ans
jst	14d51db8b4	Changed function signature to include error handling. Filters simplified.	il y a 12 ans
nfnt	fdc4a64918	Tests added	il y a 12 ans
nfnt	428642c9f1	initial commit	il y a 12 ans

28 Révisions (9780a95734d23742b20dcd84721c81f2747bcb56)