comfyui_mask2points

ComfyUI Mask to Points

中文 | English

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中文

简介

将遮罩（Mask）转换为随机坐标点的 ComfyUI 自定义节点。从分割节点输出的遮罩中采样指定数量的随机点，输出为 SAM2 兼容的 JSON 坐标格式。

典型用途

1. 从任意分割节点（如 SAM3、YOLO 等）获取单张遮罩作为输入
2. 将遮罩输入 Mask to Points 节点，采样 N 个随机坐标点
3. 将坐标点作为 SAM2 的点提示输入，实现二次精修分割

安装

cd ComfyUI/custom_nodes
git clone https://github.com/zhiruizz/comfyui_mask2points.git

重启 ComfyUI 即可。

节点说明

Mask to Points

| 参数 | 类型 | 默认值 | 说明 | |------|------|--------|------| | mask | MASK | — | 输入遮罩 | | num_points | INT | 3 | 采样点数量（1~10000） | | seed | INT | 0 | 随机种子，确保结果可复现 |

| 输出 | 类型 | 说明 | |------|------|------| | points_json | STRING | JSON 格式坐标，如 [{"x": 240, "y": 750}, {"x": 540, "y": 700}] |

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English

Introduction

A ComfyUI custom node that converts masks into random coordinate points. Sample a specified number of random points from masks produced by segmentation models like SAM3, and output them as a JSON coordinate string compatible with SAM2 point prompts.

Typical Workflow

1. Obtain a single mask from any segmentation node (e.g., SAM3, YOLO, etc.)
2. Feed the mask into the Mask to Points node to sample N random coordinate points
3. Use the coordinates as SAM2 point prompts for refined segmentation

Installation

cd ComfyUI/custom_nodes
git clone https://github.com/zhiruizz/comfyui_mask2points.git

Restart ComfyUI after installation.

Node Reference

Mask to Points

| Parameter | Type | Default | Description | |-----------|------|---------|-------------| | mask | MASK | — | Input mask | | num_points | INT | 3 | Number of points to sample (1–10000) | | seed | INT | 0 | Random seed for reproducible results |

| Output | Type | Description | |--------|------|-------------| | points_json | STRING | JSON coordinates, e.g. [{"x": 240, "y": 750}, {"x": 540, "y": 700}] |