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gemini-er

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UpdatedJuly 2, 2026 at 19:26

Open-vocabulary 2D object detection via the Gemini Robotics-ER API — one call returns pixel-space bounding boxes with labels and scores for a text query. Use when a workflow needs a detection box to seed segmentation (e.g. sam3.segment_box) or coarse localization without any local GPU model.

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graph-robots/open-robot-skills

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name	gemini-er
description	Open-vocabulary 2D object detection via the Gemini Robotics-ER API — one call returns pixel-space bounding boxes with labels and scores for a text query. Use when a workflow needs a detection box to seed segmentation (e.g. sam3.segment_box) or coarse localization without any local GPU model.
license	MIT
compatibility	requires gap>=0.1
metadata	{"category":"perception","tags":["perception","detection","gemini","api"]}
gap	{"requires":{"env_any":["GOOGLE_API_KEY","GEMINI_API_KEY"]},"serving":{"command":["python","-m","gap_core.rpc.server","--bundle","gemini-er"],"protocol":"stdio-msgpack"},"tools":[{"gemini-er.detect":"Detect pixel-space 2D bounding boxes for a text query via Gemini Robotics-ER."}]}

gemini-er

API-backed 2D detection on Gemini Robotics-ER. Zero GPU. The canonical perception recipe (from the dev tree's perceive_gemini_er workflow script) is: gemini-er.detect → best box by score → sam3.segment_box on the full frame at that box → depth projection → OBB fit.

Install

uv sync --extra gemini-er    # google-genai  (pip: pip install -e ".[gemini-er]")
export GOOGLE_API_KEY=...    # or GEMINI_API_KEY

Config

Env	Meaning	Default
`GAP_GEMINI_ER_MODEL`	Gemini model name	`gemini-robotics-er-1.5-preview`
`GOOGLE_API_KEY` / `GEMINI_API_KEY`	API key (SDK default resolution)	—

Contract

gemini-er.detect(image, query) returns {"detections": [{"box": BoundingBox2D, "label": str, "score": float}]}:

box is pixel-space {x1, y1, x2, y2} (top-left → bottom-right), clamped to the image bounds. The model emits the Gemini box_2d convention ([ymin, xmin, ymax, xmax] normalized 0–1000); conversion happens here.
score defaults to 1.0 when the model reports none — callers select the best detection with max(..., key=score).
No match (or unparseable model output) → empty detections, never an error. Treat empty as "object not visible".

When to use

Detection boxes for open-vocabulary prompts, no local weights.
Prefer molmo.point_prompt when a single click point is enough, and vlm.query_yes_no for semantic checks without localization.

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name	gemini-er
description	Open-vocabulary 2D object detection via the Gemini Robotics-ER API — one call returns pixel-space bounding boxes with labels and scores for a text query. Use when a workflow needs a detection box to seed segmentation (e.g. sam3.segment_box) or coarse localization without any local GPU model.
license	MIT
compatibility	requires gap>=0.1
metadata	{"category":"perception","tags":["perception","detection","gemini","api"]}
gap	{"requires":{"env_any":["GOOGLE_API_KEY","GEMINI_API_KEY"]},"serving":{"command":["python","-m","gap_core.rpc.server","--bundle","gemini-er"],"protocol":"stdio-msgpack"},"tools":[{"gemini-er.detect":"Detect pixel-space 2D bounding boxes for a text query via Gemini Robotics-ER."}]}

gemini-er

Install

uv sync --extra gemini-er    # google-genai  (pip: pip install -e ".[gemini-er]")
export GOOGLE_API_KEY=...    # or GEMINI_API_KEY

Config

Env	Meaning	Default
`GAP_GEMINI_ER_MODEL`	Gemini model name	`gemini-robotics-er-1.5-preview`
`GOOGLE_API_KEY` / `GEMINI_API_KEY`	API key (SDK default resolution)	—

Contract

gemini-er.detect(image, query) returns {"detections": [{"box": BoundingBox2D, "label": str, "score": float}]}:

box is pixel-space {x1, y1, x2, y2} (top-left → bottom-right), clamped to the image bounds. The model emits the Gemini box_2d convention ([ymin, xmin, ymax, xmax] normalized 0–1000); conversion happens here.
score defaults to 1.0 when the model reports none — callers select the best detection with max(..., key=score).
No match (or unparseable model output) → empty detections, never an error. Treat empty as "object not visible".

When to use

Detection boxes for open-vocabulary prompts, no local weights.
Prefer molmo.point_prompt when a single click point is enough, and vlm.query_yes_no for semantic checks without localization.