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coco-maskapi

v0.0.2

Published

An unofficial TypeScript port of Coco API's `maskApi.c` ([reference](https://github.com/cocodataset/cocoapi/blob/8c9bcc3cf640524c4c20a9c40e89cb6a2f2fa0e9/common/maskApi.c)).

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Links

Maintainers

quichesamaquichesama

Keywords

Readme

coco-maskapi

An unofficial TypeScript port of Coco API's maskApi.c (reference).

Context

Coco API uses a modified version of Run Length Encoding (RLE) to efficiently store image masks. RLE data is further compressed via a modified version of LEB128 (which can be inuitively considered LEB32).

coco-maskapi aims to bring this flavor of mask compression/encoding to web browsers, favoring Canvas ImageData as the data source and target.

maskApi.c Support Parity Status

| Function | Status | | ------------- | ----------- | | rleEncode | 🧑‍🏭 WIP | | rleDecode | 🧑‍🏭 WIP | | rleMerge | 🗒️ TODO | | rleArea | 🗒️ TODO | | rleNMS | 🗒️ TODO (?) | | bbIou | 🗒️ TODO | | bbNms | 🗒️ TODO (?) | | rleToBbox | 🗒️ TODO | | rleFrBbox | 🗒️ TODO | | uintCompare | 🗒️ TODO | | rleFrPoly | 🗒️ TODO | | rleToString | 🧑‍🏭 WIP | | rleFrString | 🧑‍🏭 WIP |

Development

pnpm install
pnpm dev

Endpoints

  • /, base example
  • /worst, worst case experimentation