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zoom image python

Colorful Crocodile answered on March 17, 2021 Popularity 3/10 Helpfulness 1/10

answer zoom image python

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zoom image python

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import numpy as np
from scipy.ndimage import zoom


def clipped_zoom(img, zoom_factor, **kwargs):

    h, w = img.shape[:2]

    # For multichannel images we don't want to apply the zoom factor to the RGB
    # dimension, so instead we create a tuple of zoom factors, one per array
    # dimension, with 1's for any trailing dimensions after the width and height.
    zoom_tuple = (zoom_factor,) * 2 + (1,) * (img.ndim - 2)

    # Zooming out
    if zoom_factor < 1:

        # Bounding box of the zoomed-out image within the output array
        zh = int(np.round(h * zoom_factor))
        zw = int(np.round(w * zoom_factor))
        top = (h - zh) // 2
        left = (w - zw) // 2

        # Zero-padding
        out = np.zeros_like(img)
        out[top:top+zh, left:left+zw] = zoom(img, zoom_tuple, **kwargs)

    # Zooming in
    elif zoom_factor > 1:

        # Bounding box of the zoomed-in region within the input array
        zh = int(np.round(h / zoom_factor))
        zw = int(np.round(w / zoom_factor))
        top = (h - zh) // 2
        left = (w - zw) // 2

        out = zoom(img[top:top+zh, left:left+zw], zoom_tuple, **kwargs)

        # `out` might still be slightly larger than `img` due to rounding, so
        # trim off any extra pixels at the edges
        trim_top = ((out.shape[0] - h) // 2)
        trim_left = ((out.shape[1] - w) // 2)
        out = out[trim_top:trim_top+h, trim_left:trim_left+w]

    # If zoom_factor == 1, just return the input array
    else:
        out = img
    return out

Popularity 3/10 Helpfulness 1/10 Language python

Source: stackoverflow.com

Tags: image python

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Contributed on Dec 09 2023

Colorful Crocodile

0 Answers Avg Quality 2/10

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pip install pyzoom

Popularity 10/10 Helpfulness 5/10 Language python

Source: Grepper

Tags: python py

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Contributed on Mar 17 2021

CODE WITH SAM

0 Answers Avg Quality 2/10

zoom image python

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