PHP Manual
Imagick
Quickly pin-point appropriate parameters for image processing

Imagick::previewImages

(PECL imagick 2.0.0)

Imagick::previewImages — Quickly pin-point appropriate parameters for image processing

说明

Imagick::previewImages ( int $preview ) : bool

Tiles 9 thumbnails of the specified image with an image processing operation applied at varying strengths. This is helpful to quickly pin-point an appropriate parameter for an image processing operation.

参数

preview: Preview type. See Preview type constants

返回值

成功时返回 TRUE。

错误／异常

错误时抛出 ImagickException。

php imagick enhance edges within the image php imagick returns a grayscale image with a three dimensional effect php imagick applies a function on the image php imagick get image artifact php imagick gets the number of unique colors in the image php imagick gets the image colorspace php imagick returns the image height php imagick returns the image properties php imagick returns the image width php imagick stretches with saturation the image intensity php imagick quickly pin point appropriate parameters for image processing php imagick smooths the contours of an image php imagick segments an image php imagick sets the image chromaticity blue primary point php imagick sets the image size php imagick sets the image chromaticity green primary point php imagick sets an image property php imagick sets the image chromaticity red primary point php imagick sets the image chromaticity white point php imagick convenience method for setting crop size and the image geometry