Stack Overflow
Stack Overflow

Questions tagged [face-detection]

Face detection is a computer technology that determines the locations and sizes of human faces in arbitrary (digital) images. It detects facial features and ignores anything else, such as buildings, trees and bodies.

Face detection is a computer technology that determines the locations and sizes of human faces in arbitrary (digital) images. It detects facial features and ignores anything else, such as buildings, trees and bodies.

NIST provides the Mugshot Identification Database (MID). The database contains approximately 3250 variable size images and can be used for developing, training and testing automated systems.

Face detection page on Wikipedia

1726 questions
0
votes
1 answer

OpenCV Face Detection(Haar Classifier): 0xC0000005: Access violation reading location 0xFFFFFFFF3F46895C

So, I extracted OpenCV 3.0.0 in C:/ and after 3 days of troubleshooting here and there, I was able to run the example code for face detector (just the face not the eyes) given at the OpenCV tutorials. Details you may be interested to know: OpenCV…
Manish Kumar Sharma
  • 12,982
  • 9
  • 58
  • 105
0
votes
1 answer

python 2.7 and opencv code gives cvtcolor error

faceCascade = cv2.CascadeClassifier('haarcascade_frontalface_default.xml') video_capture = cv2.VideoCapture(0) while True: ret, frame = video_capture.read() gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) faces = faceCascade.detectMultiScale( …
Deniz Yavuz
  • 3
  • 1
  • 1
  • 2
0
votes
1 answer

I am trying to track face in a video using KLT in Matlab R2014b. Got this error Expected ROI to be an array with number of elements equal to 4

I am trying to track face in a video using KLT in Matlab R2014b. Got this error Expected ROI to be an array with number of elements equal to 4. clc; clear all; faceDetector = vision.CascadeObjectDetector(); videoFileReader =…
Anonymous
  • 93
  • 2
  • 9
0
votes
0 answers

How do I apply the dct values to the formula?

I am implementing an algorithm about face detection corresponding to a paper i have found. At the end of the paper it uses the dct values to take out false alarms by using some formulas. One of them is the following: My question is: I have…
iol
  • 27
  • 1
  • 9
0
votes
1 answer

OpenCV 3.0 Beta - Python - Face Detection via Webcam - code gives me error

I wrote and looked over this code multiple times and it seems right to me especially that it's very simple and straight forward (Took snippet out of opencv tutorial), however it is still giving me an error. I've checked the error and I understand…
Shideh
  • 117
  • 2
  • 10
0
votes
1 answer

how to add part of Face A to Part of face B, most importantly matching color tones

i have been successful in detecting faces, cropping and pasting in new imageHow ever i am looking a way to mix color tone of face A to Face B. So, if you look and face b, cropped image color tone not matching to face B face color. how can i do…
maddy
  • 4,001
  • 8
  • 42
  • 65
0
votes
1 answer

Thumbnails with Face Detection in PHP

My objective with this script is to make smart thumbnails. In my demo package, I am using two scripts from different sources. To crop thumbnails (Source) - It totally works like native wordpress thumbnails Face Detection in PHP (Source) I am using…
Junaid
  • 1,270
  • 3
  • 14
  • 33
0
votes
1 answer

iOS face detection failed with incompletely face

I'm using Core Image for face detection like this: CIImage* image = [CIImage imageWithCGImage:aImage.CGImage]; //create Facedetector NSDictionary *opts = [NSDictionary dictionaryWithObject:CIDetectorAccuracyHigh …
HamGuy
  • 916
  • 1
  • 7
  • 18
0
votes
1 answer

error LNK2019 while runing face detection in opencv using visual studio

I was trying on a code to detect faces from the image. I tried the following sample code from the net. #include #include #include #include…
Dhanush D
  • 75
  • 12
0
votes
0 answers

Implement kalman filter for face tracking: tracking box delay

I implemented kalman filter for face tracking with OpenCV. But the effect do not meet my expectation: the tracking box delay very much (the tracking box moving to my face very slowly). The following is my code. Am I implement it the right…
tidy
  • 4,747
  • 9
  • 49
  • 89
0
votes
1 answer

Meaning of "white rectangles are subtracted from the sum of pixels in the grey rectangles" in Viola-Jones

I am trying to understand the mean of result of subtraction "The sum of the pixels which lie within the white rectangles are subtracted from the sum of pixels in the grey rectangles" by Viola-Jones. how is the result of subtraction related to the…
Tuss
  • 935
  • 1
  • 8
  • 14
0
votes
1 answer

Extracting features using MB-LBP for multi-view face detection

I am working for multi-view face detection. I have two steps in developing face-detection, (1)decision tree makes decision of which classifier to run and (2) running a selected classifier for detecting the specific orientation of face. I have 9…
batuman
  • 7,066
  • 26
  • 107
  • 229
0
votes
1 answer

OpenCV human head (not just face) "extraction" from photographs

While I've learnt how to detect faces in OpenCV, I would like to take it a bit further, to detect the outlines of a whole human head (frontal only, for now), i.e. with hair, and up to chin. How can this be done using OpenCV ? The photographs from…
bdutta74
  • 2,798
  • 3
  • 31
  • 54
0
votes
1 answer

issues in working with android portrait mode with opencv

I know this is one of the most repeated questions, however, no working solution found anywhere, after putting so much of efforts. This is really a killing issue though it might be a simple one for the experts. I am working on opencv Haar Cascade…
2vision2
  • 4,933
  • 16
  • 83
  • 164
0
votes
0 answers

Android: Check Number of Faces Before Crop Image in Android

currently I am developing android application. In my application I need to crop image from gallery. However, before I allow the user to crop the image, I want to check whether there is face detected in the image or not. Here is how I allow user to…
pokopang
  • 507
  • 1
  • 11
  • 27
1 2 3
…
99
100