PHP method to add watermarks at different locations according to the color boundary of the picture_PHP tutorial

How PHP adds watermarks at different locations based on the color boundary of the image

This article describes the example of PHP adding watermarks at different locations based on the color boundary of the image. Share it with everyone for your reference. The specific implementation method is as follows:

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function add_wm($nmw_water, $src_file, $output_file, $x, $y) { if(file_exists($output_file)) return; $w1 = MagickGetImageWidth($nmw_water); $h1 = MagickGetImageHeight($nmw_water); $nmw =NewMagickWand(); MagickReadImage($nmw, $src_file); // 默认的加水印位置调整 $lt_w = 50; $lt_h = 50; if($x == 0){ $w = MagickGetImageWidth($nmw); $h = MagickGetImageHeight($nmw); $x = $w; $y = $h; }else{ // 根据具体情况调整 $lt_w = 30; $lt_h = 40; } MagickCompositeImage($nmw, $nmw_water, MW_OverCompositeOp, $x - $w1 - $lt_w, $y - $h1 - $lt_h); MagickWriteImage($nmw, $output_file); DestroyMagickWand($nmw); } // 还是groovy的eachFileRecurse好用啊 function add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr) { $dp = dir($to_dir); while($file=$dp->read()){ if($file != '.' && $file != '..'){ if(is_dir($to_dir . '/' . $file)){ mkdir($output_dir . '/' . $file); add_wm_recurse($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $arr); }else{ if(!array_key_exists($to_dir . '/' . $file, $arr)){ continue; } $sub_arr = $arr[$to_dir . '/' . $file]; if($sub_arr){ $x = intval($sub_arr[0]); $y = intval($sub_arr[1]); add_wm($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $x, $y); } } } } $dp->close(); } $to_dir = './resized'; $output_dir = './output'; // 这个是我用java的ImageIO遍历图片像素获取的符合裤子颜色的区域的坐标array(posX, posY) $arr = array( array(50, 50) ); $water = './water.png'; $nmw_water =NewMagickWand(); MagickReadImage($nmw_water, $water); add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr); DestroyMagickWand($nmw_water);

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function add_wm($nmw_water, $src_file, $output_file, $x, $y) { if(file_exists($output_file)) return; $w1 = MagickGetImageWidth($nmw_water); $h1 = MagickGetImageHeight($nmw_water); $nmw =NewMagickWand(); MagickReadImage($nmw, $src_file); //Default watermark position adjustment $lt_w = 50; $lt_h = 50; if($x == 0){ $w = MagickGetImageWidth($nmw); $h = MagickGetImageHeight($nmw); $x = $w; $y = $h; }else{ // Adjust according to specific circumstances $lt_w = 30; $lt_h = 40; } MagickCompositeImage($nmw, $nmw_water, MW_OverCompositeOp, $x - $w1 - $lt_w, $y - $h1 - $lt_h); MagickWriteImage($nmw, $output_file); DestroyMagickWand($nmw); } // Groovy’s eachFileRecurse is still useful function add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr) { $dp = dir($to_dir); while($file=$dp->read()){ if($file != '.' && $file != '..'){ if(is_dir($to_dir . '/' . $file)){ mkdir($output_dir . '/' . $file); add_wm_recurse($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $arr); }else{ if(!array_key_exists($to_dir . '/' . $file, $arr)){ continue; } $sub_arr = $arr[$to_dir . '/' . $file]; if($sub_arr){ $x = intval($sub_arr[0]); $y = intval($sub_arr[1]); add_wm($nmw_water, $to_dir . '/' . $file, $output_dir . '/' . $file, $x, $y); } } } } $dp->close(); } $to_dir = './resized'; $output_dir = './output'; // This is the coordinate array (posX, posY) of the area that matches the color of the pants that I used java’s ImageIO to traverse the pixels of the image. $arr = array( array(50, 50) ); $water = './water.png'; $nmw_water =NewMagickWand(); MagickReadImage($nmw_water, $water); add_wm_recurse($nmw_water, $to_dir, $output_dir, $arr); DestroyMagickWand($nmw_water);

I hope this article will be helpful to everyone’s PHP programming design.

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