Questions tagged [computer-vision]
Questions about algorithms for processing and analyzing images and videos.
264
questions
1
vote
1answer
95 views
Job sites for applied/interdisciplinary mathematics related to computer science? [closed]
I'm looking for job sites in applied/interdisciplinary mathematics, more specially, say postdocs or higher positions in mathematics and medical imaging, mathematics and computer vision. I'm aware of ...
4
votes
2answers
2k views
Object recognition - given an image, does it contain a particular 3D object of interest?
I have in mind a particular 3D object. Given an image taken by a camera, I want to check whether that image contains an instance of my object.
For instance, let's say that the object is a bathroom ...
11
votes
1answer
3k views
Deriving the Sobel equations from derivatives
Many sites give the Sobel operators as the convolution mask for smoothing an image. However, I haven't found a single site that describes how you can derive the operators from partial first ...
7
votes
2answers
315 views
Automated lip-reading: inferring what someone is saying, based upon video of them speaking
Some humans can lip-read fairly well: by watching someone who is speaking, they can tell what the speaker is saying (even without hearing the speech).
Has there been any work on building computer ...
3
votes
1answer
197 views
How does facial recognition work?
I'm interested in learning about how facial recognition works. I'm especially interested in the algorithms or approach that is used. What are the leading methods for facial recognition? Is there a ...
0
votes
1answer
266 views
Is developing an OCR considered a research project? [closed]
Is developing an optical character recognition system for an alphabet which has no previous ocr considered a reputable conference or journal worthy research project, given the fact that there are so ...
2
votes
1answer
596 views
Contrast Enhancement For An Image Using A Gaussian Function
I am working on a program that involves detecting faces in photos, i am reading a paper that someone has wrote and they said that they had more success detecting faces once he they applied some ...
2
votes
2answers
226 views
Computer Vision - Algorithm for reconstructing tilted image
Recently I've seen this very good apps
https://play.google.com/store/apps/details?id=com.kingjim.shotnote&hl=en
https://itunes.apple.com/JP/app/id411332997?mt=8
this apps reconstruct the image ...
3
votes
3answers
190 views
How center the eyes of human face at specific pixels?
I am facing a problem with processing some frontal facial images.
I need to adjust the centers of the eyes (irises) to be at certain specific pixels in the image. In other words, i need to transform ...
3
votes
3answers
326 views
Handwritten character recognition as characters are being traced
I'm looking for an OCR technique (PCA or SVM or anything else) in a peculiar setting. I want to detect the motion of the finger so that if someone writes something in front of the camera in the air, I ...
21
votes
3answers
46k views
What are the differences between computer vision and image processing?
What are the differences between computer vision and image processing? For example, in object recognition, what are the roles of computer vision and image processing?
7
votes
3answers
10k views
Shannon's entropy for an image
Shannon's entropy [plog(1/p)] for an image is a probabilistic method for comparing two pixels or a group of pixels.Suppose an image with a matrix of 3x3 has pixel intensity values
...
3
votes
1answer
151 views
Which Is a Better Way of Obtaining Scales, Gaussian Blur or Down Sampling?
In computer vision, scales are important when we carry out a scene analysis. Choosing different scales affect the result of the analysis. For example, if a face is relatively small in the scene, then ...
9
votes
3answers
1k views
Intuition for convolution in image processing
I have read many documents about convolution in image processing, and most of them say about its formula, some additional parameters. No one explains the intuition and real meaning behind doing ...
