/**
* @param \Imagick $imagick
* @param int $graphWidth
* @param int $graphHeight
*/
public static function analyzeImage(\Imagick $imagick, $graphWidth = 255, $graphHeight = 127)
{
$sampleHeight = 20;
$border = 2;
$imagick->transposeImage();
$imagick->scaleImage($graphWidth, $sampleHeight);
$imageIterator = new \ImagickPixelIterator($imagick);
$luminosityArray = [];
foreach ($imageIterator as $row => $pixels) {
/* Loop through pixel rows */
foreach ($pixels as $column => $pixel) {
/* Loop through the pixels in the row (columns) */
/** @var $pixel \ImagickPixel */
if (false) {
$color = $pixel->getColor();
$luminosityArray[] = $color['r'];
} else {
$hsl = $pixel->getHSL();
$luminosityArray[] = $hsl['luminosity'];
}
}
/* Sync the iterator, this is important to do on each iteration */
$imageIterator->syncIterator();
break;
}
$draw = new \ImagickDraw();
$strokeColor = new \ImagickPixel('red');
$fillColor = new \ImagickPixel('red');
$draw->setStrokeColor($strokeColor);
$draw->setFillColor($fillColor);
$draw->setStrokeWidth(0);
$draw->setFontSize(72);
$draw->setStrokeAntiAlias(true);
$previous = false;
$x = 0;
foreach ($luminosityArray as $luminosity) {
$pos = $graphHeight - 1 - $luminosity * ($graphHeight - 1);
if ($previous !== false) {
/** @var $previous int */
//printf ( "%d, %d, %d, %d <br/>\n" , $x - 1, $previous, $x, $pos);
$draw->line($x - 1, $previous, $x, $pos);
}
$x += 1;
$previous = $pos;
}
$plot = new \Imagick();
$plot->newImage($graphWidth, $graphHeight, 'white');
$plot->drawImage($draw);
$outputImage = new \Imagick();
$outputImage->newImage($graphWidth, $graphHeight + $sampleHeight, 'white');
$outputImage->compositeimage($plot, \Imagick::COMPOSITE_ATOP, 0, 0);
$outputImage->compositeimage($imagick, \Imagick::COMPOSITE_ATOP, 0, $graphHeight);
$outputImage->borderimage('black', $border, $border);
$outputImage->setImageFormat("png");
App::cachingHeader("Content-Type: image/png");
echo $outputImage;
}
function fxAnalyzeImage(\Imagick $imagick)
{
$graphWidth = $imagick->getImageWidth();
$sampleHeight = 20;
$graphHeight = 128;
$border = 2;
$imageIterator = new \ImagickPixelIterator($imagick);
$reds = [];
foreach ($imageIterator as $pixels) {
/* Loop through pixel rows */
foreach ($pixels as $pixel) {
/* Loop through the pixels in the row (columns) */
/** @var $pixel \ImagickPixel */
$color = $pixel->getColor();
$reds[] = $color['r'];
}
$imageIterator->syncIterator();
/* Sync the iterator, this is important to do on each iteration */
}
$draw = new \ImagickDraw();
$strokeColor = new \ImagickPixel('red');
$fillColor = new \ImagickPixel('none');
$draw->setStrokeColor($strokeColor);
$draw->setFillColor($fillColor);
$draw->setStrokeWidth(1);
$draw->setFontSize(72);
$draw->setStrokeAntiAlias(true);
$x = 0;
$points = [];
foreach ($reds as $red) {
$pos = $graphHeight - $red * $graphHeight / 256;
$points[] = ['x' => $x, 'y' => $pos];
$x += 1;
}
$draw->polyline($points);
$plot = new \Imagick();
$plot->newImage($graphWidth, $graphHeight, 'white');
$plot->drawImage($draw);
$outputImage = new \Imagick();
$outputImage->newImage($graphWidth, $graphHeight + $sampleHeight, 'white');
$outputImage->compositeimage($plot, \Imagick::COMPOSITE_ATOP, 0, 0);
$imagick->resizeimage($imagick->getImageWidth(), $sampleHeight, \Imagick::FILTER_LANCZOS, 1);
$outputImage->compositeimage($imagick, \Imagick::COMPOSITE_ATOP, 0, $graphHeight);
$outputImage->borderimage('black', $border, $border);
$outputImage->setImageFormat("png");
header("Content-Type: image/png");
echo $outputImage;
}
function construct($imagePath)
{
$imagick = new \Imagick(realpath($imagePath));
$imageIterator = new \ImagickPixelIterator($imagick);
/* Loop through pixel rows */
foreach ($imageIterator as $pixels) {
/* Loop through the pixels in the row (columns) */
foreach ($pixels as $column => $pixel) {
/** @var $pixel \ImagickPixel */
if ($column % 2) {
/* Paint every second pixel black*/
$pixel->setColor("rgba(0, 0, 0, 0)");
}
}
/* Sync the iterator, this is important to do on each iteration */
$imageIterator->syncIterator();
}
header("Content-Type: image/jpg");
echo $imagick;
}
function weight($imageRegion)
{
// Outros efectos para mellorar
$imageRegion->negateImage(true);
$imageRegion->fxImage('intensity');
// Contar pixels
$it = new \ImagickPixelIterator($imageRegion);
$whitePixel = new \ImagickPixel('#000');
$totalPixels = 0;
$dirtyPixels = 0;
foreach ($it as $pixels) {
foreach ($pixels as $column => $pixel) {
if (!$pixel->isSimilar($whitePixel, 0.1)) {
$dirtyPixels++;
}
$totalPixels++;
}
$it->syncIterator();
}
return $dirtyPixels * 100 / $totalPixels;
}
private function weight($imageRegion)
{
// Outros efectos para mellorar
//$imageRegion->negateImage(true);
//$imageRegion->fxImage('intensity');
//$imageRegion->contrastImage(1);
$imageRegion->whiteThresholdImage('#EEE');
$imageRegion->blackThresholdImage('#EEE');
/*$basename = $this->basedir . '/%02d.png';
$imageRegion->writeImage( sprintf($basename, $this->i++) );*/
// Contar pixels
$it = new \ImagickPixelIterator($imageRegion);
//$whitePixel = new \ImagickPixel('#000');
$whitePixel = new \ImagickPixel('#FFF');
$totalPixels = 0;
$dirtyPixels = 0;
foreach ($it as $pixels) {
foreach ($pixels as $column => $pixel) {
if (!$pixel->isSimilar($whitePixel, 0.1)) {
$dirtyPixels++;
}
$totalPixels++;
}
$it->syncIterator();
}
$percent = $dirtyPixels * 100 / $totalPixels;
//dump($percent);
$this->logger->warning('%: ' . $percent);
return $percent;
}
