cesar
43cb1ff01c
A display sink that overlays bounding boxes and text on an image input and shows it in an OpenCV window. Based on opencv-plot from dora-hub, brought up to the dora 1.0 node contract and packaged with uv. Python rather than Rust: the opencv Rust crate generates its bindings from the OpenCV headers on the build machine, so it needs libopencv-dev and libclang-dev per machine and per architecture and does not cross-compile. Every dependency here ships prebuilt wheels for linux-x86_64, linux-aarch64 and macos-arm64. Covers every encoding the upstream node did — bgr8, rgb8, jpeg/jpg/jpe/bmp/ webp/png, yuv420 and avif — plus both bbox formats, the text overlay, PLOT_WIDTH/PLOT_HEIGHT and headless operation under CI=true.
42 lines
1.2 KiB
YAML
42 lines
1.2 KiB
YAML
# The repository's own example: a webcam and a fixed caption feeding the viewer.
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# The plot node is built from this checkout with `path:` + `build:`, so
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# `dora validate` picks up the typed contract in dora-node.yml next to it.
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#
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# Run it with `--uv` so every Python node gets its own managed environment.
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# A consumer wires the node from a tag instead — see README.md.
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#
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# `bbox` is left unwired: every bbox source is a detector, and pulling one in
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# would put a model download in the way of a webcam preview. README.md shows
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# the wiring.
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strict_types: true
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nodes:
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- id: camera
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git: https://github.com/dora-rs/dora-hub.git
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build: pip install ./node-hub/opencv-video-capture
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path: opencv-video-capture
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inputs:
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tick: dora/timer/millis/100
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outputs:
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- image
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output_types:
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image: std/core/v1/UInt8
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- id: caption
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git: https://github.com/dora-rs/dora-hub.git
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build: pip install ./node-hub/pyarrow-sender
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path: pyarrow-sender
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env:
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DATA: "'dora-plot'"
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outputs:
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- data
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output_types:
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data: std/core/v1/String
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- id: plot
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path: opencv-plot
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build: pip install .
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inputs:
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image: camera/image
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text: caption/data
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