ImageDownsampleY_r8ui

Downsamples a gray level image along the Y axis.

Let W and H denote the width and height of the input in_gray image, respectively. The shape of the out_gray image is:

• out_gray.W = W
• out_gray.H = floor(H / 2)

That is, the output height is always an even number.

The value of a pixel out_gray(x, y) is computed as:

out_gray(x, y) = 0.25in_gray(x, 2y - 1) + 0.5in_gray(x, 2y) + 0.25in_gray(x, 2y + 1)

Inputs

in_gray : ImageView. r8ui image.

Outputs

out_gray : ImageView r8ui image. The downsampled image.