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  Classes of Symisc Systems  >  pixlab PHP Facedetect and Image Processing  >  README.md  >  Download  
File: README.md
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Description: Documentation
Class: pixlab PHP Facedetect and Image Processing
Process images using the PixLab Machine Vision API
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Date: 13 days ago
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pixlab-php

This is the official PixLab PHP Client for the PixLab Machine Vision API. The client is a single PHP class which let you interact with the API server using the GET and POST HTTP methods.

For the full list of samples using this class, please refer to: https://github.com/symisc/pixlab/tree/master/PHP

First Example: Blur all human faces:

require_once "pixlab.php";

/*
 * Detect all human faces in a given image or video frame via `facedetect` and blur all of them via `mogrify`.
 * https://pixlab.io/#/cmd?id=facedetect & https://pixlab.io/#/cmd?id=mogrify for additional information.
 */
 
# Target Image: Feel free to change to whatever image holding faces you want
$img = 'http://cf.broadsheet.ie/wp-content/uploads/2015/03/jeremy-clarkson_3090507b.jpg';

$key = 'My_Pix_Key';

$pix = new Pixlab($key);
echo "Detecting faces first...\n";
/Invoke facedetect first/
if( !$pix->get('facedetect',array('img' => $img)) ){
	echo $pix->get_error_message();
	die;
}
/Grab the total number of detected faces/
$faces = $pix->json->faces;


if( count($faces) < 1 ){
	echo "No human faces were were detected on this picture\n";
}else{
	echo "Total number of detected faces: ".count($faces)."\n";
	echo "Censuring faces...\n";
	/Call mogrify (Only POST)/
	if( !$pix->post('mogrify',array('img' => $img,'cord' => $faces)) ){
		echo $pix->get_error_message();
	}else{
		echo "Censured Faces: ".$pix->json->link."\n";
	}
}

Second Example: Mimic Snapchat Filters

/*
 * PixLab PHP Client which is just a single class PHP file without any dependency that you can get from Github
 * https://github.com/symisc/pixlab-php 
 */
require_once "pixlab.php";

# Detect all human faces & extract their landmark regions via facelandmarks & make a small Snapchat filter effect.
# Only three commands are actually needed in order to mimic the Snapchat filters effects:
# face landmarks:         https://pixlab.io/#/cmd?id=facelandmarks
# smart resize:           https://pixlab.io/#/cmd?id=smartresize
# merge:                  https://pixlab.io/#/cmd?id=merge
# Optionally: blur, grayscale, oilpaint, etc. for cool background effects.

$img = 'http://cf.broadsheet.ie/wp-content/uploads/2015/03/jeremy-clarkson_3090507b.jpg';

$pix = new Pixlab('My_Pix_Key');
/Grab the face landmarks first/
if( !$pix->get('facelandmarks',[
	'img' => $img
	]) ){
	echo $pix->get_error_message()."\n";
	die;
}

$total = count($pix->json->faces); # Total detected faces
print($total." faces were detected\n");
$snap = [];
# Iterate all over the detected faces
foreach ($pix->json->faces as $face){
	$cord = $face->rectangle;
	# Show the face coordinates 
	print ("Coordinates...\n");
	print ("\n\twidth: " . $cord->width . ' height: ' . $cord->height . ' x: ' . $cord->left .' y: ' . $cord->top);
	
	# Show landmarks:
	print ("\nLandmarks...\n");
	
	$landmarks = $face->landmarks;
	
	print ("\n\tNose: X: "       . $landmarks->nose->x      . ", Y: ".$landmarks->nose->y);
	print ("\n\tBottom Lip: X: " . $landmarks->bottom_lip->x. ", Y: ".$landmarks->bottom_lip->y);
	print ("\n\tTop Lip: X: "    . $landmarks->top_lip->x   . ", Y: ".$landmarks->top_lip->y);
	print ("\n\tChin: X: "       . $landmarks->chin->x      . ", Y: ".$landmarks->chin->y);
	
	print ("\n\tBone Center: X: "     . $landmarks->bone->center->x     . ", Y: ".$landmarks->bone->center->y);
	print ("\n\tBone Outer Left: X: " . $landmarks->bone->outer_left->x . ", Y: ".$landmarks->bone->outer_left->y);
	print ("\n\tBone Outer Right: X: ". $landmarks->bone->outer_right->x. ", Y: ".$landmarks->bone->outer_right->y);
	
	print ("\n\tBone Center: X: " . $landmarks->bone->center->x . ", Y: ".$landmarks->bone->center->y);
	
	print ("\n\tEye Pupil Left: X: " . $landmarks->eye->pupil_left->x . ", Y: ".$landmarks->eye->pupil_left->y);
	print ("\n\tEye Pupil Right: X: " . $landmarks->eye->pupil_right->x . ", Y: ".$landmarks->eye->pupil_right->y);
	
	print ("\n\tEye Left Brown Inner: X: " . $landmarks->eye->left_brow_inner->x . ", Y: ".$landmarks->eye->left_brow_inner->y);
	print ("\n\tEye Right Brown Inner: X: " . $landmarks->eye->right_brow_inner->x . ", Y: ".$landmarks->eye->right_brow_inner->y);
	
	print ("\n\tEye Left Outer: X: " . $landmarks->eye->left_outer->x . ", Y: ".$landmarks->eye->left_outer->y);
	print ("\n\tEye Right Outer: X: " . $landmarks->eye->right_outer->x . ", Y: ".$landmarks->eye->right_outer->y); 
	
	# More landmarks on the docs..
	
	# Pick the last face in this loop for the sack of simplicity. Refer to the sample set for a complete example
	$snap = $face;
}
# Make a quick Snapchat filter on top of the last detected face
if ($total < 1){
    # No faces were detected
	die;
}
 
# The flower crown to be composited on top of the target face
$flower = 'http://pixlab.xyz/images/flower_crown.png';

# Resize the flower crown which is quite big right now to exactly the face width using smart resize.
print ("\nResizing the snap flower crown...\n");
if( !$pix->get('smartresize',[
	'img' => $flower,
	'width' => 20 + $snap->rectangle->width, # Face width
	'height' => 0 # Let Pixlab decide the best height for this picture
	]) ){
	echo $pix->get_error_message()."\n";
}else{
	$flower = $pix->json->link;
}
# Finally, Perform the composite operation
print ("Composite operation...\n");
if( !$pix->post('merge',[
	'src' => $img,
	'cord' => [
	array( /Array for each landmarks/
		'img' => $flower,
		'x' => $snap->landmarks->bone->outer_left->x,
		'y' => $snap->landmarks->bone->outer_left->y /Adjust for optimal effect/
	)
	]]) ){
	echo $pix->get_error_message();
}else{
	 # Optionally call blur, oilpaint, grayscale for more stuff..
	print ("Snap Filter Effect: ".$pix->json->link);
}
echo "\n";

Third example: Blur an image or video frame based on its NSFW score

require_once "pixlab.php";

# Target Image: Change to any link (Possibly adult) you want or switch to POST if you want to upload your image directly.
# The target API endpoint we'll be using here: nsfw (https://pixlab.io/cmd?id=nsfw).
$img = 'https://i.redd.it/oetdn9wc13by.jpg';

# Your PixLab key
$key = 'My_Pixlab_Key';

# Blur an image based on its NSFW score
$pix = new Pixlab($key);
/Invoke NSFW/
if( !$pix->get('nsfw',array('img' => $img)) ){
	echo $pix->get_error_message();
	die;
}
/Grab the NSFW score/
$score = $pix->json->score;
if( $score < 0.5 ){
	echo "No adult content were detected on this picture\n";
}else{
	echo "Censuring NSFW picture...\n";
	/Call blur with the highest possible radius and sigma/
	if( !$pix->get('blur',array('img' => $img,'rad' => 50,'sig' =>30)) ){
		echo $pix->get_error_message();
	}else{
		echo "Censured Picture: ".$pix->json->link."\n";
	}
}
?>

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