使用 Homebrew, Nix 安装 blockhash

项目链接

• 主页

命令和别名

• blockhash

项目历史

The official README says blockhash is based on the algorithm described in 'Block Mean Value Based Image Perceptual Hashing' by Bian Yang, Fan Gu, and Xiamu Niu. GitHub metadata dates the repository to September 2014, and the README copyright line names Commons Machinery in 2014.

The release history shows v0.1 in December 2014, follow-up 0.2 releases in January 2017, v0.3 in November 2017, and later maintenance releases through v0.3.3 in January 2023.

采用历史

blockhash has narrow but durable package adoption. The input metadata records Homebrew and Nix packages, which is enough for scripts and reproducible media-processing environments to depend on the CLI without building the ImageMagick-backed source manually.

使用方式

The README documents a direct CLI workflow: run `blockhash` with a list of images to calculate hashes, or `blockhash --help` for options. Building from source requires ImageMagick's MagickWand development library and the waf build script.

为什么软件包爱好者会关心

blockhash matters as a compact packaged implementation of perceptual hashing, useful for duplicate detection, image comparison, media archives, and content pipelines where cryptographic hashes are too brittle because visually similar images may have different bytes.

时间线

• 2014: Official repository created and v0.1 released.
• 2017: 0.2 and v0.3 releases published.
• 2023: v0.3.3 maintenance release published.

Related projects

• ImageMagick/MagickWand is the image-processing dependency named in the README.
• The underlying perceptual-hashing method comes from the block mean value image hashing paper cited by the README.
• Other perceptual-hash tools and media duplicate-detection pipelines are adjacent use cases.

来源

• GitHub repository metadata via gh api repos/commonsmachinery/blockhash
• https://github.com/commonsmachinery/blockhash#readme
• https://github.com/commonsmachinery/blockhash/releases
• source_facts.package-manager