Contents

MPSImageSobel

A filter that convolves an image with the Sobel operator.

Declaration

class MPSImageSobel

Overview

When the color model (e.g. RGB, two-channel, grayscale, etc.) of the source and destination textures match, the filter is applied to each color channel separately. If the destination is single-channel (i.e. monochrome) but the source is multi-channel, the pixel values are converted to grayscale before applying the Sobel operator by using the linear gray color transform vector v shown in the code listing below.

Luminance = v[0] * pixel.x + v[1] * pixel.y + v[2] * pixel.z

Topics

Initializers

Methods

Properties

See Also

Convolution Image Filters