Timmy Welch
aa1fe89e96
Performance
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Reduce allocations by re-using uint8 slices where possible
Use github.com/disintegration/imaging for resizing
Add a module option to skip RGB conversion for YCbCr images
2024-08-04 17:21:58 -07:00
evanoberholster
45da7a6fef
Refactored Perceptionhash for performance ( #54 )
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* refactored Perceptionhash for performance
* update AUTHORS.md
* replaced PerceptionHash algorithm
* Update hashcompute_test.go
Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>
* Update hashcompute_test.go
Co-authored-by: Evan Oberholster <eroberholster@gmail.com>
Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>
2022-05-26 15:56:47 +09:00
Alex
c41a59a872
add PerceptionHashExtend function ( #18 )
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goimagehash: Implement PerceptionHashExtend
2019-02-08 18:02:25 +09:00
Dominik Honnef
ad2b6ded3b
Use bits.OnesCount64 when available
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Benchmark on i7-2600k, which has the POPCNT instruction:
name old time/op new time/op delta
DistanceIdentical-8 5.08ns ± 0% 1.01ns ± 1% -80.07% (p=0.008 n=5+5)
DistanceDifferent-8 81.5ns ± 2% 1.0ns ± 0% -98.76% (p=0.016 n=5+4)
Benchmark on Cavium Octeon, a MIPS64 platform with no dedicated
instruction:
name old time/op new time/op delta
DistanceIdentical-2 120ns ± 6% 144ns ± 5% +19.93% (p=0.008 n=5+5)
DistanceDifferent-2 656ns ± 4% 144ns ± 4% -78.09% (p=0.008 n=5+5)
2018-05-02 23:52:38 +09:00
Dong-hee Na
dbc186a437
Update AUTHORS
2017-11-17 14:33:21 +09:00
