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image_aspect_ratio_filter

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图像长宽比过滤器。过滤图像长宽比不在指定范围内的样本。 当用户提到图像长宽比、图片比例过滤、图像尺寸筛选、图像宽高比等需求时使用此skill。 即使用户没有明确说出"长宽比",只要任务涉及根据图像宽高比来筛选数据, 就应该使用此skill。

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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/cas-bigdatalab/piflow/blob/HEAD/workspace/skills/image_aspect_ratio_filter/SKILL.md

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Copying this prompt does not install or run the skill. Review third-party files before use. Codex skill guide

Image Aspect Ratio Filter 图像长宽比过滤 Skill

功能概述

本skill根据图像的长宽比(宽/高)进行过滤,只保留长宽比在指定范围内的图像。 常用于筛选特定比例的图像,如正方形、横屏、竖屏等。

触发条件

当用户请求以下任务时,应使用此skill:

  • 图像长宽比过滤
  • 图片比例筛选
  • 图像尺寸过滤
  • 图像宽高比筛选
  • 筛选正方形图像
  • 筛选横屏/竖屏图像

核心参数说明

必需参数

参数说明
--input输入JSON文件路径
--output输出JSON文件路径

可选参数

参数说明默认值
--min_ratio最小长宽比0.333
--max_ratio最大长宽比3.0
--any_or_all多图像过滤策略any
--image_key图像字段的键名images

输入文件格式

[
  {"images": ["/path/to/image1.jpg"]},
  {"images": ["/path/to/image2.jpg"]},
  {"images": ["/path/to/image3.png"]}
]

长宽比说明

  • 长宽比 = 宽 / 高
  • 1.0 = 正方形
  • < 1.0 = 竖屏图像
  • 1.0 = 横屏图像

使用方法

默认参数过滤(长宽比0.333-3.0)

python scripts/run_image_aspect_ratio_filter.py \
  --input ./input.json \
  --output ./output.json

筛选正方形图像(长宽比接近1.0)

python scripts/run_image_aspect_ratio_filter.py \
  --input ./input.json \
  --output ./output.json \
  --min_ratio 0.9 \
  --max_ratio 1.1

筛选横屏图像

python scripts/run_image_aspect_ratio_filter.py \
  --input ./input.json \
  --output ./output.json \
  --min_ratio 1.0

筛选竖屏图像

python scripts/run_image_aspect_ratio_filter.py \
  --input ./input.json \
  --output ./output.json \
  --max_ratio 1.0

过滤策略说明

策略说明
any任一图像满足条件即保留(默认)
all所有图像都满足条件才保留

输出示例

命令行输出:

[OK] Image aspect ratio filtering completed!
   Min ratio: 0.333
   Max ratio: 3.0
   Strategy: any
   Original documents: 3
   Filtered documents: 2
   Removed documents: 1
   Input file: ./input.json
   Output file: ./output.json

输出JSON格式:

[
  {"images": ["/path/to/image1.jpg"]},
  {"images": ["/path/to/image2.jpg"]}
]

环境要求

安装依赖: 本SKILL使用依赖 data_juicer,请在调用前安装好python环境并安装data_juicer:

pip install py-data-juicer

注意事项

  1. 图像路径:输入JSON中的图像路径应为绝对路径或相对于工作目录的路径
  2. 长宽比计算:宽 / 高,1.0 表示正方形
  3. 支持格式:支持 PNG、JPG、JPEG 等常见图像格式
  4. 适用场景:筛选特定比例的图像、过滤极端比例图像