function.imagick-gammaimage.html
来自「php的帮助文档,涉及到PHP的案例和基本语法,以及实际应用内容」· HTML 代码 · 共 104 行
HTML
104 行
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Gamma-corrects an image</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagick-fximage.html">Imagick::fxImage</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagick-gaussianblurimage.html">Imagick::gaussianBlurImage</a></div> <div class="up"><a href="class.imagick.html">The Imagick class</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.imagick-gammaimage" class="refentry"> <div class="refnamediv"> <h1 class="refname">Imagick::gammaImage</h1> <p class="verinfo">(No version information available, might be only in CVS)</p><p class="refpurpose"><span class="refname">Imagick::gammaImage</span> — <span class="dc-title">Gamma-corrects an image</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>Imagick::gammaImage</b></b></span> ( <span class="methodparam"><span class="type">float</span> <tt class="parameter">$gamma</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$channel</tt></span> ] )</div> <div class="warning"><b class="warning">Warning</b><p class="simpara">This function iscurrently not documented; only its argument list is available.</p></div> <p class="para"> Gamma-corrects an image. The same image viewed on different devices will have perceptual differences in the way the image's intensities are represented on the screen. Specify individual gamma levels for the red, green, and blue channels, or adjust all three with the gamma parameter. Values typically range from 0.8 to 2.3. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">gamma</tt></i></span> <dd> <p class="para"> The amount of gamma-correction. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">channel</tt></i></span> <dd> <p class="para"> Provide any channel constant that is valid for your channel mode. To apply to more than one channel, combine channeltype constants using bitwise operators. Defaults to Imagick::CHANNEL_ALL. Refer to this list of <a href="imagick.constants.html#imagick.constants.channel" class="link">channel constants</a>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success. </p> </div> <div class="refsect1 errors"> <h3 class="title">Errors/Exceptions</h3> <p class="para"> Throws ImagickException on error. </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.imagick-fximage.html">Imagick::fxImage</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.imagick-gaussianblurimage.html">Imagick::gaussianBlurImage</a></div> <div class="up"><a href="class.imagick.html">The Imagick class</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?