perceptual-hash: Find duplicate images
Flags
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-0.1.3.5.tar.gz [browse] (Cabal source package)
- Package description (revised from the package)
Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.
Maintainer's Corner
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), containers, filepath, hip (<2), optparse-applicative (>=0.13.0.0), par-traverse (>=0.2.1.0), perceptual-hash, primitive, stm (>=2.3), vector, vector-algorithms [details] |
| License | BSD-3-Clause |
| Copyright | Copyright: (c) 2019-2020 Vanessa McHale |
| Author | Vanessa McHale |
| Maintainer | vamchale@gmail.com |
| Revised | Revision 1 made by vmchale at 2020-07-15T23:35:53Z |
| Category | Application, CommandLine, Images |
| Source repo | head: git clone https://github.com/vmchale/phash |
| Uploaded | by vmchale at 2020-04-24T19:10:10Z |
| Distributions | NixOS:0.1.4.7 |
| Executables | phash |
| Downloads | 4193 total (49 in the last 30 days) |
| Rating | 2.0 (votes: 1) [estimated by Bayesian average] |
| Your Rating | |
| Status | Docs available [build log] Last success reported on 2020-04-24 [all 1 reports] |
Readme for perceptual-hash-0.1.3.5
[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.