How to crop and rotate an image to bounding box?

To crop and rotate an image to its bounding box, you can follow these steps:

1. Find the bounding box: Use an object detection algorithm or manually select the region of interest (ROI) to define the bounding box.

2. Extract the ROI: Crop the image using the coordinates of the bounding box. You can use image processing libraries such as OpenCV, PIL, or scikit-image to do this.

3. Rotate the image: If the object in the ROI is not aligned with the horizontal axis, you may need to rotate the image to make it upright. You can use the rotation angle obtained from the object detection algorithm or manually set the rotation angle.

4. Pad the image: When rotating the image, the corners may go outside the original image boundaries, resulting in empty areas. You can pad the image with a color or duplicate the edges to fill in these empty areas.

Here's some sample Python code using OpenCV to crop and rotate an image to its bounding box: 

 

import cv2

# Read the image
image = cv2.imread('image.jpg')

# Define the bounding box
x, y, w, h = 100, 100, 200, 200

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