imagick控制台命令转换为PHP imagick [英] imagick console commands into PHP Imagick

问题描述

有人可以解释我如何使用Imagick pecl将运行良好的imagick cli命令转换为PHP代码吗? 我对convert命令的语法不太熟悉，因此我很难快速完成它.

Can anyone explain me how to convert imagick cli command that are working fine into PHP code using Imagick pecl? I am not familiar enough with syntax of convert command and it is complex for me to do it quickly.

您可能没有读过下面这堆文本，只是帮助将cli命令转换为PHP. :)

You may not read this heap of text bellow, just help to convert cli command to PHP. :)

我在不透明的白色背景上有一个局部透明的图形(原始图像).通过填充该透明图形，一些背景颜色/图像，我将在白色背景上具有许多彩色图形.

I have one partially transparent figure located on not transparent white background(original image). With filling that transparent figure some background color/image I'll have many colored figures on white background.

我现在需要的(以及imagick的来源):我需要在结果图像上删除该白色背景，以便唯一的彩色图形停留在透明背景上，并且边缘有些模糊.

What i need now(and where imagick comes in): I need remove that white background on result image so the only colored figure stays there with some blured edges on transparent backround.

我在做什么:

1. 我用黑色填充原始图像，以在白色背景上获得更多的对比度黑色图形.接下来，使用以下命令删除白色背景:

1. I fill original image with black color to get more contrast black figure on white background. Next, remove white background with command:

convert ./black.png -fuzz 70% -fill none -floodfill +0+0 white -channel A -blur 0x1 ./mask.png

所以我将来有一些透明的面具可以使用.

So i have some transparent mask to use in future.

1. 也将mask.png应用于从原始图像中获取的一些彩色图像(green.php):

1. Apply mask.png to some colored image(green.php) that was got from original too:

convert ./green.png -alpha Off ./mask.png -compose CopyOpacity -composite PNG32:result.png

该命令必须翻译成PHP.谁能给我建议?

That commands have to be translated into PHP. Can anyone advice me?

推荐答案

我准备回答我的问题.

准备原始图像以用作遮罩.用黑色制作部分透明的图形:

Prepare original image to use it as mask. Make partially transparent figure in black:

$blank = new \Imagick('./original.png');
$blank->setimagebackgroundcolor('#000000');

使面具从空白变成黑色.删除不透明的白色背景，使其完全透明:

Make mask from blank in black color. Remove not transparent white background and make it fully transparent:

$mask = $blank->flattenImages();
$mask->floodfillpaintimage('none', 30000, '#FFFFFF', 1, 1, false, \Imagick::CHANNEL_ALPHA);
$mask->blurImage(0, 1, \Imagick::CHANNEL_ALL);

因此，我们有一个仅由所需图形组成的蒙版图像(黑色). 现在我们要有一个绿色的身影，把它拿下来:

So we have a mask image that consists only of figure we need(in black). Now we want to have a green figure, take it:

$greenBlank = new \Imagick('./original.png');
$greenBlank->setimagebackgroundcolor('#00FF00');
$green = $greenBlank->flattenImages();

现在在我们的$ green上涂上准备好的面膜.

Now apply prepared mask to our $green.

$green->compositeImage($mask, \Imagick::COMPOSITE_COPYOPACITY, 0, 0);

仅此而已.我们在透明背景上有一个绿色的身影.

That is all. We have got a green figure on transparent background.

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