cv3.transform.yshift

cv3.transform.yshift(img, y, border=0, value=None, rel=None)[source]

Shift image vertically by y pixels.

Parameters:

img (numpy.ndarray) – Input image.
y (int or float) – Shift in y direction.
border (int or str, optional) – Border type. Can be one of: ‘constant’, ‘replicate’, ‘reflect’, ‘wrap’, ‘default’ or OpenCV flags. Defaults to cv2.BORDER_CONSTANT.
value – Border color value for constant border type. Defaults to None.
rel (bool, optional) – Whether to interpret y as relative value. Defaults to None.

Returns:

Vertically shifted image.

Return type:

numpy.ndarray

Example

>>> import cv3
>>> import numpy as np
>>> # Create a simple image
>>> img = np.zeros((100, 100, 3), dtype=np.uint8)
>>> img[25:75, 25:75] = [255, 255, 255]  # White square
>>> # Shift by 10 pixels in y direction
>>> shifted = cv3.yshift(img, 10)