Imagick::subImageMatch
(バージョン情報なし。おそらく SVN 版にしか存在しないでしょう)
Imagick::subImageMatch — Description
説明
$Imagick
[, array &$offset
[, float &$similarity
]] )Searches for a subimage in the current image and returns a similarity image such that an exact match location is completely white and if none of the pixels match, black, otherwise some gray level in-between. You can also pass in the optional parameters bestMatch and similarity. After calling the function similarity will be set to the 'score' of the similarity between the subimage and the matching position in the larger image, bestMatch will contain an associative array with elements x, y, width, height that describe the matching region.
パラメータ
-
Imagick -
-
offset -
-
similarity -
A new image that displays the amount of similarity at each pixel.
返り値
例
例1 Imagick::subImageMatch()
<?php
function subImageMatch($imagePath) {
$imagick = new \Imagick(realpath($imagePath));
$imagick2 = clone $imagick;
$imagick2->cropimage(40, 40, 250, 110);
$imagick2->vignetteimage(0, 1, 3, 3);
$similarity = null;
$bestMatch = null;
$comparison = $imagick->subImageMatch($imagick2, $bestMatch, $similarity);
$comparison->setImageFormat('png');
header("Content-Type: image/png");
echo $imagick->getImageBlob();
}
?>
忘却曲線を使ってこの知識を確実に記憶に残す
