metadata

title: points-4-perspective
emoji: 📐
colorFrom: blue
colorTo: yellow
sdk: gradio
sdk_version: 3.45.2
app_file: app.py
pinned: false
python_version: 3.9.18

points-4-perspective

A cute little tool that applies a 4-point perspective transform based on coordinates the user defines on the image. To compute the transformation matrix, we define target coordinates from a top-down perpendicular view relative to the source coordinates. We then use this transformation matrix on the image to warp its perspective to get the top-down view of whatever ROI the user selects in the image - neat!

This approach defines the aspect ratio of the target coordinates based on the source coordinates, which does not produce an accurate aspect ratio. To get around this, width/height sliders are provided to the user to adjust the output image dimensions.