perceptual-hash: Find duplicate images
[ application, bsd3, commandline, images, library, program ]
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Manual Flags
| Name | Description | Default |
|---|---|---|
| with-phash | Use FFI bindings to pHash | Disabled |
| llvm | Use LLVM backend to GHC rather than NCG | Disabled |
Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info
Downloads
- perceptual-hash-0.1.4.1.tar.gz [browse] (Cabal source package)
- Package description (as included in the package)
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For package maintainers and hackage trustees
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| Versions [RSS] | 0.1.0.0, 0.1.0.1, 0.1.0.2, 0.1.1.0, 0.1.1.1, 0.1.2.0, 0.1.3.0, 0.1.3.1, 0.1.3.2, 0.1.3.3, 0.1.3.5, 0.1.4.1, 0.1.4.2, 0.1.4.3, 0.1.4.4, 0.1.4.5, 0.1.4.6, 0.1.4.7 (info) |
|---|---|
| Change log | CHANGELOG.md |
| Dependencies | base (>=4.9 && <5), bytestring, containers, filepath, hip, JuicyPixels, optparse-applicative (>=0.13.0.0), par-traverse (>=0.2.1.0), perceptual-hash, primitive, stm (>=2.3), vector, vector-algorithms, webp [details] |
| License | BSD-3-Clause |
| Copyright | Copyright: (c) 2019-2020 Vanessa McHale |
| Author | Vanessa McHale |
| Maintainer | vamchale@gmail.com |
| Category | Application, CommandLine, Images |
| Source repo | head: git clone https://github.com/vmchale/phash |
| Uploaded | by vmchale at 2021-06-15T01:49:15Z |
| Distributions | NixOS:0.1.4.7 |
| Executables | phash |
| Downloads | 4823 total (8 in the last 30 days) |
| Rating | 2.0 (votes: 1) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs uploaded by user Build status unknown [no reports yet] |
Readme for perceptual-hash-0.1.4.1
[back to package description]phash
This is a Haskell library to detect (potential) duplicate images.
It also contains a command-line tool.
Use
Use it on one or more directories:
phash ~/Pictures ~/Downloads
~/Pictures/frog.jpeg, ~/Downloads/frog.png
Installation
Pre-Built Release
For many platforms, you can find binaries here.
Source
Download cabal-install and GHC. Then:
cabal install perceptual-hash --constraint='hip +disable-chart'
Library
You can find library documentation on Hackage.
Performance
This library has similar performance to the pHash library for PNG images.
benchmarking fileHash/cat.png
time 20.67 ms (20.60 ms .. 20.78 ms)
1.000 R² (0.999 R² .. 1.000 R²)
mean 20.84 ms (20.76 ms .. 21.01 ms)
std dev 246.3 μs (149.5 μs .. 396.7 μs)
benchmarking fileHash/frog.jpeg
time 17.82 ms (17.62 ms .. 18.05 ms)
0.999 R² (0.999 R² .. 1.000 R²)
mean 17.54 ms (17.45 ms .. 17.65 ms)
std dev 272.3 μs (194.9 μs .. 369.3 μs)
benchmarking fileHash/frog.png
time 12.02 ms (11.95 ms .. 12.11 ms)
1.000 R² (0.999 R² .. 1.000 R²)
mean 12.08 ms (12.04 ms .. 12.13 ms)
std dev 115.0 μs (90.79 μs .. 144.7 μs)
benchmarking foreignHash/cat.png
time 18.86 ms (18.79 ms .. 18.97 ms)
1.000 R² (1.000 R² .. 1.000 R²)
mean 18.92 ms (18.87 ms .. 18.99 ms)
std dev 149.7 μs (129.0 μs .. 183.6 μs)
benchmarking foreignHash/frog.jpeg
time 8.533 ms (8.480 ms .. 8.574 ms)
1.000 R² (0.999 R² .. 1.000 R²)
mean 8.686 ms (8.644 ms .. 8.745 ms)
std dev 129.0 μs (97.99 μs .. 164.8 μs)
benchmarking foreignHash/frog.png
time 9.697 ms (9.649 ms .. 9.735 ms)
1.000 R² (1.000 R² .. 1.000 R²)
mean 9.746 ms (9.717 ms .. 9.775 ms)
std dev 84.08 μs (70.14 μs .. 97.91 μs)
Foreign Library
This package contains a foreign library and a header file
ATS Bindings
Because of the foreign library, hs_phash can be used in ATS as well. ATS users
of the library may be interested in hs-bind.