<div>
Can you give us a definition or reference about HUI? &nbsp;Thanks, ~Ray
</div>

<div>
I guess you mean &quot;hue&quot;. 
<a href="http://www.php.net/manual/en/function.imagick-modulateimage.php" rel="ugc">http://www.php.net/manual/en/function.imagick-modulateimage.php</a> 
<a href="http://www.php.net/manual/en/gmagick.modulateimage.php" rel="ugc">http://www.php.net/manual/en/gmagick.modulateimage.php</a>
</div>

<div>
Hue would make more sense. 
<a href="http://en.wikipedia.org/wiki/Hue" rel="ugc">http://en.wikipedia.org/wiki/Hue</a> 
 
Please post a test image and I will write a script showing how to do this using the PHP GD library 
<a href="http://www.php.net/manual/en/ref.image.php" rel="ugc">http://www.php.net/manual/en/ref.image.php</a> 
 
Thanks and regards, ~Ray
</div>

<div>
Or just have a look at this: 
<a href="http://www.laprbass.com/RAY_temp_walkman69.php?r=255" rel="ugc">http://www.laprbass.com/RAY_temp_walkman69.php?r=255</a> 
 
Looks like some good information on the PHP man pages here (although I have not tested it) 
<a href="http://www.php.net/manual/en/function.imagefilter.php#91796" rel="ugc">http://www.php.net/manual/en/function.imagefilter.php#91796</a> 

<pre><code class="code-10 nolinks" id="code-8168700">&lt;?php // RAY_temp_walkman69.php
error_reporting(E_ALL);

// GET OUR ARGUMENTS (NEED SANITY CHECKS HERE)
$r = isset($_GET[&quot;r&quot;]) ? (int)$_GET[&quot;r&quot;] : 0;
$g = isset($_GET[&quot;g&quot;]) ? (int)$_GET[&quot;g&quot;] : 0;
$b = isset($_GET[&quot;b&quot;]) ? (int)$_GET[&quot;b&quot;] : 0;
$a = isset($_GET[&quot;a&quot;]) ? (int)$_GET[&quot;a&quot;] : 0;

// PLACES TO PUT OUR IMAGES
$f = 'new.png';
$s = 'gsc.png';

// A DIRECTORY TO HOLD OUR WORK
$d = 'RAY_junk/';

// LOCATION OF A COLOR IMAGE
$url = $d . 'color.png';

// LOAD A COLOR IMAGE http://php.net/manual/en/function.imagecreatefrompng.php
$img = ImageCreateFromPNG($url);

// WRITE THE GRAY IMAGE
ImageFilter($img, IMG_FILTER_GRAYSCALE);
ImagePNG($img, $d . $s);

// RE-LOAD A COLOR IMAGE http://php.net/manual/en/function.imagecreatefrompng.php
$img = ImageCreateFromPNG($url);

// WRITE THE COLORIZED IMAGE
ImageFilter($img, IMG_FILTER_GRAYSCALE);
ImageFilter($img, IMG_FILTER_COLORIZE, $r, $g, $b, $a);
ImagePNG($img, $d . $f);

// SHOW THE DATA WE USED AND THE IMAGES
echo &quot;R=$r, G=$g, B=$b, A=$a&quot;;
echo PHP_EOL . '&lt;br clear=&quot;all&quot; /&gt;';
echo &quot;&lt;img src=\&quot;$url\&quot; /&gt;&quot;;
echo PHP_EOL . '&lt;br clear=&quot;all&quot; /&gt;';
echo &quot;&lt;img src=\&quot;$d$s\&quot; /&gt;&quot;;
echo PHP_EOL . '&lt;br clear=&quot;all&quot; /&gt;';
echo &quot;&lt;img src=\&quot;$d$f\&quot; /&gt;&quot;;
</code></pre>
<a href="https://filedb.experts-exchange.com/incoming/2011/05_w21/459675/color.png" target="_blank" class="file-inline" title="The color image used in the test. (45 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>color.png</a>
</div>

color.png

<div>
greetings walkman69, , &nbsp;I can not get a good Idea of what sort of input and output you might need for a function that does what you say -&gt; 
&quot;apply a selected colour to a monochrome image.. Making it blue-ish, or red-ish.. or whatever&quot; 
 
not to sure about what blueish means, I know what it means in speaking, but not when using it as PHP code requirements, LOL; 
 
Anyway, as best I can understand what you said, you might test out the code I post below, it has the &nbsp;colororize( ) function, which has three parameters, the first is the $file , which is a JPEG image file path on your server that you want to colorize, , , the next is the $Colorish , which I have defined 4 constants - 
 
REDISH 
GREENISH 
BLUEISH 
OLDPHOTO 
 
the next is the $amount, which can be an integer from 5 to 75, there are 3 constants for it - 
 
C_SLIGHT 
C_MEDIUM 
C_HEAVY 
 
I did not know how to output this function so, for this I have it write a JPEG file to your server, 
&nbsp; &nbsp;WARNING, you must place the file path for your server in the line - 
&nbsp; &nbsp; @imagejpeg($grey, 'images3/addcolor.jpg'); 
 
for it to function properly, OR change the way you want it to output the resultant $grey GD image. 
 
There are very many things to consider about image Color manipulations, I hope this will give a result that does what you may need. 
 
Ask questions if you need more info. 

<pre><code class="code-10 nolinks" id="code-8169075">&lt;html&gt;&lt;head&gt;&lt;title&gt;Colorize a Greyscale Image&lt;/title&gt;&lt;/head&gt;&lt;BODY bgcolor=&quot;#e0f0ff&quot;&gt;&lt;h2&gt;Colorize a Greyscale Image test&lt;/h2&gt;

&lt;?php

define('REDISH', 0);
define('GREENISH', 1);
define('BLUEISH', 2);
define('OLDPHOTO', 3);

define('C_SLIGHT', 10);
define('C_MEDIUM', 18);
define('C_HEAVY', 33);

function colororize($file, $Colorish = OLDPHOTO, $amount = C_MEDIUM) {
if (!$grey = imagecreatefromjpeg($file)) return false;
$width = imagesx($grey);
$height = imagesy($grey);

$image=imagecreatetruecolor($width, $height);
switch ($Colorish) {
	case 0: $cish = imagecolorallocate($image, 242, 8, 0); break;
	case 1: $cish = imagecolorallocate($image, 10, 240, 0); break;
	case 2: $cish = imagecolorallocate($image, 0, 10, 240); break;
	default: $cish = imagecolorallocate($image, 238, 163, 10); break;
	}

imagefilledrectangle($image, 0, 0, $width, $height, $cish);
if ($amount &lt; 5) $amount = 5;
if ($amount &gt; 75) $amount = 75;
imagecopymerge($grey, $image, 0, 0, 0, 0, $width, $height, $amount);
@imagejpeg($grey, 'images3/addcolor.jpg');
 // WARNING this only outputs a server file write of a JPEG FILE
@imagedestroy($grey);
@imagedestroy($image);
return true;
}

$imageFile = 'images3/greyscale.jpg';
if (!colororize($imageFile, BLUEISH, C_HEAVY)) echo 'ERROR - File does NOT exist or is NOT a JPEG image';


?&gt;

&lt;p&gt;&lt;img src=&quot;images3/addcolor.jpg&quot;&gt;&lt;/p&gt;
&lt;/body&gt;&lt;/html&gt;
</code></pre>
</div>

<div>
Slick812:: It doesn't neccessarily have to be an monochrome image. 
That was just a bad way of going about things that I thought of late yesterday. 
 
Thanks however for writing that nice code. However i'm not sure it's what i'm looking for, 
I'll have a closer look at it in the morning though.
</div>

<div>
i didn't fint any way to make it more exactly like the Photoshop Hue effect, but it is close enough.
</div>

<div>
<div class="content wysiwyg-content">
I know there are some functions in PHP for setting alpha blending and such, 
found here: <a href="http://se2.php.net/manual/en/function.imagealphablending.php" rel="ugc">http://se2.php.net/manual/en/function.imagealphablending.php</a> 
 
However I can't find a way to set HUI on a picture thru PHP? 
 
What i'm really looking for is a way to somehow apply a selected colour 
to a monochrome image.. Making it blue-ish, or red-ish.. och whatever.. -ish there is.. 
 
Think monochrome.. 
 
Don't point me in a direction of a complete library, I only need this one function. 
 
Thanks in advance! 
 

</div>
</div>

I know there are some functions in PHP for setting alpha blending and such,
found here: http://se2.php.net/manual/en/function.imagealphablending.php

However I can't find a way to set HUI on a picture thru PHP?

What i'm really looking for is a way to somehow apply a selected colour 
to a monochrome image.. Making it blue-ish, or red-ish.. och whatever.. -ish there is..

Think monochrome..

Don't point me in a direction of a complete library, I only need this one function.

Thanks in advance!



Is there a way i can change HUI on a picture thru PHP?

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Web Graphics Software

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