Imagick::setImageDepth()

(PECL imagick 2.0.0)

Sets the image depth

说明

Imagick::setImageDepth(int $depth): bool

Sets the image depth.

参数

$depth

返回值

成功时返回TRUE。

错误／异常

错误时抛出 ImagickException。

Depth is a number in terms of bits. Floats seem to be accepted.
From the ImageMagick documentation:
"This the number of bits in a color sample within a pixel. Use this option to specify the depth of raw images whose depth is unknown such as GRAY, RGB, or CMYK, or to change the depth of any image after it has been read."