getPixelIterator(); $ll = 0; foreach ($imageIterator as $row => $pixels) { foreach ($pixels as $column => $pixel) { // 获取每个像素色值; $value = $pixel->getColor(); // 反相绿色通道色值; $r = $value["r"]; $g = abs(($value["g"] - 255)); $b = $value["b"]; $a = $value["a"]; $pixel->setColor("rgba({$r}, {$g}, {$b}, {$a})"); } $imageIterator->syncIterator(); } $imagick->setImageCompressionQuality(100); // $imagick->setCompressionQuality(100); $imagick->writeImage("/media/yuanjiajia/zhiTai_300GB_P4/LuxcoreModel/normal_maps1-g.jpg"); ?>