Possible Duplicate: Image processing - edge detection I need to count out boxes in a warehouse by using edge detection techniques, images will be taken from a 3D model of a warehouse and the propose system will be used 3 images in 3 different angles to cover the whole area of a warehouse. Does anyone know how to get length of ...
I have a webpage that loads thumbnails of images and I want to show old images with a sepia tone. The thumb will always be the same dimensions so could I just make a transparent png file and show it over the image? Should I use something like imagemagick or is this overkill? Any suggestions? Cheers ...
Hello All, I want to create an app in which i want to do some image processing. So I would like to know if there is any open-source image processing library available? also I would like to create a filter like this one Glamour Filter any help regarding this would be very much appreciated. If someone already have a source code to create s...
I'm looking for a data structure that would allow me to store an M-by-N 2D matrix of values contiguously in memory, such that the distance in memory between any two points approximates the Euclidean distance between those points in the matrix. That is, in a typical row-major representation as a one-dimensional array of M * N elements, th...
I have an image in OpenGL that I am attempting to apply a simple HSB filter to. The user selects a hue value, I shade the image appropriately, display it, and everyone is happy. The problem I am running into is that the code I have inherited that worked on a previous system (Solaris, presuming OpenGL 2.1) does not work on our current sys...
Is it possible to distort an image using trigonometric functions like sine and cosine so that it comes out wavy. If so, how. PHP is the preferred language but it can be any... ...
I'm searching for a library that will allow me to perform graphical manipulations on SVG files. By "manipulations" I mean things like: Merge two overlapping shapes into a single shape Find the geometric center of a shape Draw a copy of a shape that is 25% of the original shape's size ...and other sorts of things that one can do in I...
Before attempting to resize an image in PHP using libGD, I'd like to check if there's enough memory available to do the operation, because an "out of memory" completely kills the PHP process and can't be catched. My idea was that I'd need 4 byte of memory for each pixel (RGBA) in the original and in the new image: // check available me...
I am a beginner in Python. I want to make a small project on histogram equalisation. Basically I want to include changing contrast, color and crop option etc in my project. I am blank right now. Please suggest something. I am very keen to make this project but how to start? ...
I want to be able to dynamically generate PNG24 and PNG8 images using WPF. I was able to generate the PNG24 image that I want using the following code (simplified for the example): var targetBitmap = new RenderTargetBitmap(128, 16, 96, 96, PixelFormats.Pbgra32); var drawingVisual = new DrawingVisual(); using (DrawingContext context = d...
Hi, im trying to implement a gaussian blur with the use of FFT and could find here the following recipe. This means that you can take the Fourier transform of the image and the filter, multiply the (complex) results, and then take the inverse Fourier transform. I've got a kernel K, a 7x7 Matrix and a Image I, a 512x512 Matr...
I'm looking to do a couple basic features with images and Java... image resizing and cropping possibly making composite images What java library would be the easiest to use for that purpose? thanks ...
I want to make a program for checking the printed paper for errors. PDF File: please refer to the second page, top right picture As you see, that system could identify the errors made by printer. I want to know how was it achieved. What are existing documents about this? Or any ideas you have? Thank you ...
Hi, I'm working on a web application where we have a very large image (4000 * 2000 pixels) that can be dragged about the place, zoomed in/out. When the image isn't zoomed in or out, it can be dragged about very fast and it looks great. As soon as i change the size of the image by some factor, the dragging becomes dreadfully slow. I ...
I'm looking for a encoder that creates a Quicktime Movie (PhotoJpeg) from OpenEXR image sequences. Any help would be really appreciated ...
For my project, I have to read each pixel in an image, perform a math operation on each pixel, then display the results of the modified pixel in an updated image. For this example, I took the square root of each pixel. public void rootCalc(){//go through the rows and columns for(int x=grayscale_orig.getWidth()...
I am somewhat of an amateur farmer and I have a precious cherry tomato plant growing in a pot. Lately, to my chagrin, I have discovered that my precious plant has been the victim of a scheme perpetrated by the evil Manduca Quinquemaculata - also known as the Tomato Hornworm (http://insects.tamu.edu/images/insects/common/images/cd-43-c-tx...
Hi folks I have a website going that takes a user's uploaded image, and makes three copies - a 'full' copy to print with (downsized to 1500x1125), a 'web' copy to display online (not coded yet), and finally a thumbnail. So here's the code - _imageformat() is passed the parameters (which I've confirmed to be correct) from CI's Upload Cl...
How can you make a sharpness filter with the PHP GD library? So that this... Turns to this... If it is not possible with PHP, than what other languages are capable? ...
Hi everybody, I have some images that contain numbers written perfectly. These numbers can go from one to 4 characters. Is there a way to recognize and convert these numbers to text with PHP or Javascript? Thank you, Regards. ...