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Question
How to downsample an image by taking the average
I have a grayscale image A of size 512x512. I want to downsample this image by a factor of 3. This normally means that the first...
9 years ago | 1 answer | 0
1
answerQuestion
Object segmentation: defining the object of interest
This question might be a bit more broad. In case of object segmentation, for instance my object of interest is a person in t...
9 years ago | 2 answers | 0
2
answersQuestion
Creating edge detection kernel
I would appreciate if someone can briefly outline on how one can generate a 5x5 edge detection mask using an ideal step function...
9 years ago | 1 answer | 0
1
answerQuestion
Distinguishing between colors in LAB color space
This is a general question which will help me in formulating the algorithm. I have converted my RGB image to CIELAB color sp...
9 years ago | 2 answers | 0
2
answersQuestion
Thresholding in Canny edge detection algorithm
Since Canny recommended a ratio of high:low threshold to be between 2:1 and 3:1. I am interested in knowing why is this range pa...
9 years ago | 1 answer | 0
1
answerQuestion
Discontinue processing on edge pixels within an image
I have enhanced the edge information within an image. Now I want another algorithm to work on the rest of the image information ...
9 years ago | 1 answer | 0
1
answerQuestion
Brightness of each image within movie
Hello, I've been wondering if there's any way of displaying the change in brightness level of a video in single plot?
10 years ago | 1 answer | 0
1
answerQuestion
Observing difference between two images graphically
Hi, I was wondering if there a way to plot brightness intensity curve of rgb image so that I could observe the changes betwee...
10 years ago | 2 answers | 0
2
answersQuestion
Reducing memory storage through matrix computation
I need to compute a matrix and the following code does exactly what I want. However, the operator creates O(n^2) storage but I w...
10 years ago | 1 answer | 0
1
answerQuestion
Dynamic Range of image
Hello guys, I am really lost on this. Please could someone let me know how could I initiate the plotting of dynamic range of ...
10 years ago | 1 answer | 0
1
answerQuestion
Discussion on extracting features from one video to the next
Hello, *Problem Background:* I have two avi video files of 20 seconds: First file is bit dark but shows details in bright ...
10 years ago | 1 answer | 0
1
answerQuestion
Code bug with image algorithm
Hello there, Here's a part of the code that I'm using to approximate an image and I'm kind of not understanding the problem w...
10 years ago | 1 answer | 0
1
answerQuestion
Smoothing outer circular portion of image
Hello guys, I am working on iris detection in which I am interested in obtaining only the of the central circular portion of ...
10 years ago | 1 answer | 0
1
answerQuestion
Image Processing using codebook
How to encode and decode image using codebook which has been created and trained using similar input image?
11 years ago | 0 answers | 0
0
answersQuestion
Vector Quantization using LBG Algorithm
I am in a small doubt of how to proceed to the next stage. 1. I have used im2col which basically turned gray-scale image int...
11 years ago | 0 answers | 0
0
answersQuestion
Decompressing image using Vector quantization
Once the code book is generated and I get the index and codebook as the output. How would I decompress the image by correlating ...
11 years ago | 0 answers | 0
0
answersQuestion
RESHAPE command in MATLAB
I am working on this piece of code which is basically k-means clustering and I'm really stuck at a point where cell needs to be ...
11 years ago | 1 answer | 0
1
answerQuestion
Image compression through vector quantization
When talking about vector quantization for compressing images, three steps have been taught to us so far: Codebook generation, e...
11 years ago | 0 answers | 0
0
answersQuestion
Bit Error Rate using Simulink
I have displayed bit error rate using simulink but I have no idea how to calculate Bit error rate using the data displayed. My s...
11 years ago | 1 answer | 0
1
answerQuestion
Binary Rectangular PAM Simulink
I am facing a problem in setting the sample time for gain block and Additive White Gaussian Noise block connected together (http...
11 years ago | 0 answers | 0
0
answersQuestion
Noise removal from background
I have this image <<http://oi49.tinypic.com/2v1ufpv.jpg>> which I obtained after enhancing in order to make the artery cle...
11 years ago | 2 answers | 0
2
answersQuestion
Image illumination correction of arterial contour
I have a code which which I am a bit confused on how to optimize in order to make it work for an image <http://tinypic.com/view....
11 years ago | 1 answer | 0
1
answerQuestion
Web camera in Matlab
I recently installed SmartCam software on pc and mobile through which I could easily use my mobile phone camera as web camera. H...
11 years ago | 1 answer | 0
1
answerQuestion
Square object detection using webcam
Hello experts, I have this code which works so perfect while detecting square objects from images which are downloaded from i...
11 years ago | 2 answers | 0
2
answersSquare object detection using webcam
Yes, yes I did. I could send you the code through private message if you agree on thta.
11 years ago | 0
Question
Altering intensity levels within an image
I would like to know with a black and white image of bit depth 8 (0-255 tones), how could I divide this range of 0-255 into two ...
11 years ago | 2 answers | 0
2
answersQuestion
Coefficient computation for bicubic interpolation
Dear Community Members, Since bicubic interpolation for an image requires 16 coefficients which will eventually form the wind...
11 years ago | 1 answer | 0
1
answerQuestion
Amplitude Modulation using simulink
I am currently doing amplitude modulation using three very high frequency sine waves which I getting perfectly after adding all ...
11 years ago | 1 answer | 0
1
answerQuestion
How could I define simple code fro bicubic?
I understand linear interpolation of image very well where the length of row and column is interpolated and then inversed to obt...
11 years ago | 0 answers | 0
0
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