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c6e4dead
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2021-04-15T17:27:09
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Version 2.8.
Fixed regression with the copy-constructor of CImageResizeVars class (previously it caused uninitialized accesses).
Removed filter length optimization as it did not reduce overhead measurably.
Optimized "peaked cosine" window function generator (removed division).
Added "unbiasing" to resizer - an unconventional approach which reduces peak error significantly, at the expense of 5% increased overhead.
Reoptimized filter parameters, now yielding an unprecedented quality.
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4efa5c61
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2021-04-10T22:34:30
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Version 2.7.
Added normalization of individual fractional delay filters. This reduced peak error by 3 dB, which is substantial for image resizing.
Reoptimized all filter parameters resulting in better frequency response linearity.
Added AVIR_NOCTOR macro to avoid copy-constructing and copying objects of some classes via a default copy function.
Added copy-constructor and assignment operator to the CImageResizerVars class, to avoid uninitialized memory copying.
Corrected automatic image offseting and "k" factor on image upsizing.
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24c1c928
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2019-05-19T09:08:34
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Updated README.md and binary tools.
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752557d1
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2018-08-08T19:44:46
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Minor improvements, see Change log 2.1.
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2b51e4b0
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2018-08-07T22:33:08
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Made several minor improvements - see Change log 2.0.
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ff4717f8
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2016-08-05T19:44:20
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Added the built-in sRGB gamma correction.
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f0371b13
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2016-08-05T12:49:16
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Fixed PNG-48 operation on Mac OS X.
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000fc4a7
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2016-08-03T10:34:34
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imageresize: fixed PNG-48 handling bug, fixed PNG file DPI scaling.
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8850cde0
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2016-06-17T14:06:32
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Added 16-bit depth (PNG-48) file support to "imageresize" tool.
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859c7dd8
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2016-06-07T08:47:02
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Dithering is now not used by default. Default is simple rounding.
Updated "imageresize" utility with the -d switch which enables dithering.
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f7060ae2
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2016-03-12T12:25:29
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Fixed smoothing when downsizing image by a factor 1 to 2.
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4222213a
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2015-11-10T19:23:24
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Fixed access violation due to a possible unaligned SIMD variable access.
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e8ecde3e
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2015-11-10T17:49:34
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Implemented de-interleaved processing useful for 1-channel image resizing.
Added float8 SIMD type support.
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c8703955
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2015-10-21T23:23:59
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5a12d43a
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2015-10-14T23:20:59
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Implemented "float4" SIMD data type support that offers 10-50% performance boost.
Added abstraction layer for scanline processing functions.
Added abstraction layer for dithering.
Added 0th order filter bank for better 8-bit resizing performance.
Optimized interpolation filter's quality.
Improved default image resizer parameter sets.
Optimized half-band filter used for 8X downsizing.
Optimized correction filter used during upsizing.
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e3a3d67e
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2015-10-01T21:20:20
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Optimizied default resizer parameters.
"Fast" resizer parameters are now called as "LR" (low-ring).
Added "ultra" resizer parameters.
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f5bce79a
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2015-09-24T23:18:52
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Considerably optimized upsizing by 2 or more.
Removed a minor border-line artifact during upsizing.
Fixed an aliasing artifact when downsizing by 8 or more.
Updated and refined the license agreement.
Improved the default set of resizer parameters.
Added a set of "faster" resizer parameters.
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a8e30230
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2015-09-19T23:06:09
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Initial commit.
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