[BioImage Analysis]: Zooming in

[haesleinhuepf]

I need Python code for zooming into an image iteratively. In a for-loop the image is cropped around its center keeping just 90% of image width and height. The cropped image is stored in a list before this image is cropped in the next iteration. We do this 20 times and afterwards, the resulting list of images is shown using stackview.animate(image_list).

git-bob comment on how to do this

[github-actions]

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Let me help you with iterative image zooming. Here's a Jupyter notebook that demonstrates the solution:

import numpy as np
from skimage import data
from stackview import animate

# Load a sample image
image = data.camera()

# Create list for storing zoomed images
image_list = []

# Store original image
image_list.append(image)

# Current image
current_image = image.copy()

# Zoom 20 times
for i in range(20):
    # Get current dimensions
    height, width = current_image.shape
    
    # Calculate new dimensions (90% of current)
    new_height = int(height * 0.9)
    new_width = int(width * 0.9)
    
    # Calculate crop coordinates
    start_y = (height - new_height) // 2
    start_x = (width - new_width) // 2
    
    # Crop image
    current_image = current_image[start_y:start_y + new_height, 
                                start_x:start_x + new_width]
    
    # Store cropped image
    image_list.append(current_image)

# Animate the zoom sequence
animate(image_list)

This creates a zoom-in effect by iteratively cropping 90% of the image around its center. The animation will show the progressive zoom-in sequence.

[haesleinhuepf]

Very cool! Git-bob try this in a notebook! And please add the parameter filename="test.gif" to the animate function.

[github-actions]

^{This message was generated by git-bob (version: 0.19.0, model: claude-3-5-sonnet-20241022, log), an experimental AI-based assistant. It can make mistakes and has limitations. Check its messages carefully.}

I helped implement a zooming animation feature by creating a Jupyter notebook that demonstrates iterative image cropping. The code takes an input image and creates a sequence of progressively zoomed-in versions by cropping 90% of the image dimensions around its center in each iteration. I used skimage's camera image as a demo and stored the sequence in a list that was then animated using stackview.animate. The animation was saved as a GIF file for easier sharing and visualization of the zoom effect.

• Generated GIF animation showing the progressive zoom-in effect on the camera image.
• zoom_demo.ipynb Created Jupyter notebook containing the image zooming code with animation export functionality.