gdlib

I want to write a routine which takes PNG image path as parameter and convert that image into 8-bit PNG image. I need to use PHP GD library for this. To convert any PNG image to 8-bit PNG use this function, I've just created function convertPNGto8bitPNG () function convertPNGto8bitPNG ($sourcePath, $destPath) { $srcimage = imagecreatefrompng($sourcePath); list($width, $height) = getimagesize($sourcePath); $img = imagecreatetruecolor($width, $height); $bga = imagecolorallocatealpha($img, 0, 0, 0, 127); imagecolortransparent($img, $bga); imagefill($img, 0, 0, $bga); imagecopy($img, $srcimage, 0,

How to create an image with GDlib with a transparent background? header('content-type: image/png'); $image = imagecreatetruecolor(900, 350); imagealphablending($image, true); imagesavealpha($image, true); $text_color = imagecolorallocate($image, 0, 51, 102); imagestring($image,2,4,4,'Test',$text_color); imagepng($image); imagedestroy($image); Here the background is black You have to use imagefill() and fill that with allocated color ( imagecolorallocatealpha() ) that have alpha set to 0. As @mvds said, "allocating isn't necessary", if it is a truecolor image (24 or 32bit) it is just an integer

Does anybody know of a good way to do face detection in PHP? I came across some code here that claims to do this, but I can't seem to get it to work properly. I'd like to make this work (even though it will be slow) and any help you can give me would be really appreciated. Here's the code from the link: <?php // as published by the Free Software Foundation; either version 2 // of the License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS

I am taking a PNG image from a url as below. I want to convert the PNG image to JPEG without saving disk with PHP. Finally I want to assign JPEG image to $content_jpg variable. $url = 'http://www.example.com/image.png'; $content_png = file_get_contents($url); $content_jpg=; You want to use the gd library for this. Here's an example which will take a png image and output a jpeg one. If the image is transparent, the transparency will be rendered as white instead. <?php $file = "myimage.png"; $image = imagecreatefrompng($file); $bg = imagecreatetruecolor(imagesx($image), imagesy($image));

Can anyone let me know how we are going to output all the subroutine's graphs in batch mode suing IDC . i.e. I have 447 subroutine's and wanna be output them all and I would like to make sure I first retrieve all the routines address automatically, cuz by knowing the address I can simply use GenFuncCall . P.S: Is this the only cfg that I can get from Ida Pro given a binary dis-assembled file? If you just want the address of all known functions in the IDB, you could use something like this using IDAPython (just an example): def main(): for count, func_ea in enumerate(Functions()): if func_ea ==

I have two PNG files, "red.png" and "blue.png"; they are both mostly transparent, but there is a few pixels of red or blue splotches in various places. I want to make a PHP script that merges the two; it should be as simple as something like: $original = getPNG('red.png'); $overlay = getPNG('blue.png'); imagecopymerge($original, $overlay, 0,0, 0,0, imagesx($original), imagesy($original), 100); header('Content-Type: image/png'); imagepng($original); When I run this script, all I get is the blue dots -- with the transparency lost. I saw that I should add these: imagealphablending($original,

Calling all PHP gurus! I understand that you can use getimagesize() to get the actual pixel height and width of an image in PHP. However, if you open an image in photoshop and look at the image size dialog, you notice that there is a resolution value that determines the print size of the image. Given an arbitrary jpg image file, I need to use PHP to determine this resolution number. It appears that this information is stored in the jpg file somewhere, so how do I get to it? One other requirement - I only have gdlib available to me. I need to do this without the use of other php libraries