我不介意这是通过PHP脚本(理想情况下是Codeigniter,但任何都可以)或通过Photoshop操作完成的。
基本上我想得到一张我可以做以下的图像:
有人可以使用GD / ImageMagick或任何合适的PHP脚本/库向我提供有关如何执行此操作的任何提示吗?
到目前为止,我已尝试过以下内容......
$gd = imagecreatefromjpeg('./assets/temp/whitespace-img.jpg');
imagetrim($gd, '#ffffff', null);
function imagetrim($im, $bg, $pad=null, $output=null){
// Calculate padding for each side.
if (isset($pad)){
$pp = explode(' ', $pad);
if (isset($pp[3])){
$p = array((int) $pp[0], (int) $pp[1], (int) $pp[2], (int) $pp[3]);
}else if (isset($pp[2])){
$p = array((int) $pp[0], (int) $pp[1], (int) $pp[2], (int) $pp[1]);
}else if (isset($pp[1])){
$p = array((int) $pp[0], (int) $pp[1], (int) $pp[0], (int) $pp[1]);
}else{
$p = array_fill(0, 4, (int) $pp[0]);
}
}else{
$p = array_fill(0, 4, 0);
}
// Get the image width and height.
$imw = imagesx($im);
$imh = imagesy($im);
// Set the X variables.
$xmin = $imw;
$xmax = 0;
// Start scanning for the edges.
for ($iy=0; $iy<$imh; $iy++){
$first = true;
for ($ix=0; $ix<$imw; $ix++){
$ndx = imagecolorat($im, $ix, $iy);
if ($ndx != $bg){
if ($xmin > $ix){ $xmin = $ix; }
if ($xmax < $ix){ $xmax = $ix; }
if (!isset($ymin)){ $ymin = $iy; }
$ymax = $iy;
if ($first){ $ix = $xmax; $first = false; }
}
}
}
// The new width and height of the image. (not including padding)
$imw = 1+$xmax-$xmin; // Image width in pixels
$imh = 1+$ymax-$ymin; // Image height in pixels
// Make another image to place the trimmed version in.
$im2 = imagecreatetruecolor($imw+$p[1]+$p[3], $imh+$p[0]+$p[2]);
// Make the background of the new image the same as the background of the old one.
$bg2 = imagecolorallocate($im2, ($bg >> 16) & 0xFF, ($bg >> 8) & 0xFF, $bg & 0xFF);
imagefill($im2, 0, 0, $bg2);
// Copy it over to the new image.
imagecopy($im2, $im, $p[3], $p[0], $xmin, $ymin, $imw, $imh);
if ($output)
{
imagejpeg($im2, $output);
}
// To finish up, we replace the old image which is referenced.
$im = $im2;
}
答案 0 :(得分:1)
这个Photoshop脚本会做你想要的。请记住,修剪功能仅适用于右下角或左上角像素颜色。如果边框区域是“脏”的话,这将不起作用
var srcDoc = app.activeDocument;
//trim image to transparent width
srcDoc.trim(TrimType.TOPLEFT, true, true, true, true);
var w = srcDoc.width.value;
var h = srcDoc.height.value;
if (w<h)
{
var imageWidth = 380;
var imageHeight = Math.floor(w*(380/h))
}
else
{
var imageHeight = 380;
var imageWidth = Math.floor(h*(380/w))
}
var resizeRes = 72
var resizeMethod = ResampleMethod.BICUBIC;
//resize
srcDoc.resizeImage(imageWidth, imageHeight, resizeRes, resizeMethod)
// adjust canvas size
srcDoc.resizeCanvas(400, 400, AnchorPosition.MIDDLECENTER);