Signal Processing Stack Exchange
Signal Processing Stack Exchange

Questions tagged [face-detection]

34 questions
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What are some face detection (not recognition) algorithms suitable for limited (embedded) processors?

I am looking at a hardware based platform for surveillance class of applications. I want to identify faces of people as they appear in the scene. I don't intend to really apply face recognition (then or later). Also orientation of faces can be…
Dipan Mehta
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What are the state of the art methods for person segmentation and person pose identification

I know that HOG is pretty state of the art for person detection, but in its original form HOG is only a detection method, and I don't believe it is particularly fast either (there is a significant speedup which takes the sliding window and rejects…
John Robertson
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Eigen Values and Eigen Vectors in Image Processing

I have been reading about eigen values and eigen vectors but I haven't been able to find any decent explanation relating their application in Image Processing / Computer Vision. For example, How can those be used for face detection and eye…
silver surfer
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Red eye detection

Project: Red eye detection Description: I want to remove red-eye from images. I am not able to use face detector because, the faces in the images are not always frontal and also the images are of players with helmet. And the images may have many red…
user1317084
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Online boosting (training on the fly) for face detection

I want to implement an on-the-fly training process for face detection. I'm not sure but it seems it's called online boosting. Вefore, I have used OpenCV face detection with my own cascades, but I'm interested in technique which can "learn in…
mrgloom
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scale invariant face similarity metric

I need some face similarity metric. I know about PCA,LDA approaches that uses raw pixels data, but they are not scale invariant(I know that I can resize image but I think that's not good solution). Maybe I need to use AAM,ASM aproaches? But I'm…
mrgloom
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Face Detection + Cropping

Project: Face Detection Description: I want to detect and crop a face in an image. The image is captured through webcam and only one face per image.I used OpenCV face detector, but I was not satisfied with the cropping. So, I started using STASM…
user1317084
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OpenCV face recognition: Finding a best match

I am working on OpenCV2.4.2 C++ interface for face recognition functionality. The face recognition feature seems to be working fine on standard databases. (AT&T, Face Recognition Data, University of Essex, UK) I am more interested in negative…
Trupti
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How to relocate face points in opencv / face distortion?

I have to simulate facial expressions on a face image ( say open mouth ). For this I first extracted the facial feature points and found the corners of the lips. Now I need to deform the image by moving the points down. In the above image I need…
user1317084
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STASM or AAM which is more efficient

I am working in face detection and recognition project. I am using STASM for face detction and locating face landmarks. On googling I found AAM (Active Appearance Model) and found that it is also used for face detection and locating face landmarks.…
user1317084
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Methods for searching a large face database

I have a large face database, and I want to search through it. For example, if I input a new face image, the system would return the best N similarities. I know that PCA, LDA, and Procrustes analysis are used for this, but it seems that I need to…
mrgloom
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How to implement Viola-Jones algorithm in Matlab?

I am new in Image Processing and I want to implement Viola-Jones algorithm along with Haar Features for face detection in Matlab. Is there any proper documentation for this?
opu 웃
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How can I track detected objects from frame to frame

I want to track people's faces in a video stream (like a security camera), but I am running into a problem. I was using a Haar classifier to find the faces and sending the detected faces to a system to identify the person that was detected (so I can…
Mark Omo
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Summed-area table vs Integral image?

I have been going through few research papers around face recognition and I came across two texture extraction algorithms : Summed-area table by Crow et al. ("Summed-area tables for texture mapping", 1984) Integral image by Viola et al. (e.g.…
Alwyn Mathew
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Face Recognition: Simplistic Explanation on PCA Eigenface Algorithm

I m working on a project that I have to use eigenface but I have some uncertainty and I dont know how to deal with it. There are some tutorials about it on internet but I can't understand what exactly they mean. This is what i know: First of all…
virtouso
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