Adjust hue, saturation, value of an RGB image in YIQ color space.
img_adjust_hsv_in_yiq( image, delta_hue = 0, scale_saturation = 1, scale_value = 1, name = NULL )
| image | RGB image or images. Size of the last dimension must be 3. |
|---|---|
| delta_hue | float, the hue rotation amount, in radians. |
| scale_saturation | float, factor to multiply the saturation by. |
| scale_value | float, factor to multiply the value by. |
| name | A name for this operation (optional). |
Adjusted image(s), same shape and dtype as `image`.
This is a convenience method that converts an RGB image to float representation, converts it to YIQ, rotates the color around the Y channel by delta_hue in radians, scales the chrominance channels (I, Q) by scale_saturation, scales all channels (Y, I, Q) by scale_value, converts back to RGB, and then back to the original data type. `image` is an RGB image. The image hue is adjusted by converting the image to YIQ, rotating around the luminance channel (Y) by `delta_hue` in radians, multiplying the chrominance channels (I, Q) by `scale_saturation`, and multiplying all channels (Y, I, Q) by `scale_value`. The image is then converted back to RGB.