image-manipulation

Consider an application handling uploading of potentially very large PNG files. All uploaded files must be stored to disk for later retrieval. However, the PNG files can be up to 30 MB in size, but disk storage limitations gives a maximum per file size of 1 MB. The problem is to take an input PNG of file size up to 30 MB and produce an output PNG of file size below 1 MB. This operation will obviously be lossy - and reduction in image quality, colors, etc is not a problem. However, one thing that must not be changed is the image dimension. Hence, an input file of dimension 800x600 must produce

Edit Anybody with a similar problem - I found another SO answer here with a great python solution that exploits the speed of NumPy. Please consider the following problem: I have two images, both the same size. One is a red square with varying layers of opacity: And a second, a blue square, smaller than the red, with no opacity but white surrounding it. I am using OpenCV's python bindings for this project and so far (after reading about watermarking here I have this: redSquare = cv2.imread('redSquare.png', cv2.IMREAD_UNCHANGED) (rH, rW) = redSquare.shape[:2] blueSquare = cv2.imread('blueSquare

Possible Duplicate: Resize a picture to a fixed size How to resize an image in PHP? Try the GD and Image functions , or - if you want something more than just that - a library like ImageMagick. You may use imagemagick , call it via exec("convert ...") from php, copy it to the desired location and access it. You can also do like I do and use a lightweight framework like flourishlib.com where everything is nicely wrapped in a class fImage , example from documentation: // Saving as a 60 quality JPEG $image2 = new fImage('./example.gif'); $image2->resize(250, 0); $image2->saveChanges('jpeg', 60);

I was wondering if someone can help me with an image resize function written in PHP but one wich has to resize an image, but in a manner like PHPThumb does. So, if I set the width and height of the new image, the function must fit the uploaded image (and mantain aspect ratio) in the new width and height. Any help is appreciated. Thank you. I wrote this a couple years ago and it does exactly what you're looking for. Keep in mind this only calculates the width and height, you must call Imagick yourself to actually apply these calculations. /** * ImageIntelligentResize() * * @global Intelligently

I have some code in Python using PIL, that will print UTF-8 characters to an image. I've noticed that for joining Bidi scripts like Arabic, the same code fails to connect characters correctly (the initial forms are only chosen, medial and final forms aren't utilized) Can anyone recommend a method or technique for solving this particular issue? If you want to keep using PIL, use pyarabicshaping with pybidi or you might want to consider switching to pangocairo which uses HarfBuzz for text shaping. What I did is the following: Python + Wand (Python Lib) +arabic_reshaper(Python Lib) +bidi

I want to crop a part of Image, for that I am using following code: int x=20; int y=50; int [] rgbdata=new int[(0+width-x+height-y)* (image.getWidth())]; image.getARGB(rgbdata, 0, image.getWidth(), x, y, width, height); cropedImage=new Bitmap(image.getWidth(),image.getWidth()); cropedImage.setARGB(rgbdata, 0,image.getWidth(), 80,80, width, height); x an y are the position from where the cropping will be done in the rectangular form. but it is not working. you can do this using graphics: public Bitmap cropImage(Bitmap image, int x, int y, int width, int height) { Bitmap result = new Bitmap