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

What does this mean about faces detection by using OpenCV

I'm trying to figure out the code about face detection. Here is the code that I can not understand: MatOfRect faces = new MatOfRect(); mJavaDetector.detectMultiScale(mGray, faces, 1.1, 2, 2, // TODO: objdetect.CV_HAAR_SCALE_IMAGE …
Pelican
  • 43
  • 7
0
votes
0 answers

Algorithms for eye gaze (eye-direction) in OPENCV

I need to implement algorithm for eye gaze to know the direction of eye using opencv , i have been struggling for one month to do it using viola-jones algorithm with training classifiers provided by opencv in a first step i based my research…
The Beast
  • 1,629
  • 2
  • 29
  • 42
0
votes
1 answer

face alignment for face recognition

I have a problem to align faces using opencv. I detect the face then I use flandmarks and calculate the angle of rotation. I use this function to rotate the image : cv::Mat rotate(cv::Mat src, double angle) { cv::Mat dst; cv::Point2f…
Tyranitar
  • 37
  • 1
  • 7
0
votes
2 answers

Face tracking with subtracting frames in video

Is it possible to track a face in video with subtracting frames without using face recognition? What happen if the face change in next frame? Is there any way to detect this change with subtracting?
Daniyal
  • 45
  • 4
0
votes
1 answer

OpenCv detectMultiScale scale search algorithm

I was wondering if OpenCVin case of haar features and lbp scales the image during the multiscale search or it scales the features itself as it mentioned in a paper? EDIT: As it turns out the detector scales images, not features. Does anybody know…
warmspringwinds
  • 1,147
  • 2
  • 14
  • 31
0
votes
1 answer

OpenCV `detectMultiScale()` neighbours algorithm

I have an implemented face detector of my own, but I faced a problem recently that OpenCV solves with the minNeighbors parameter for detectMultiScale() function: I have a lot of false positives. What OpenCV does is leaves only rectangles that have a…
warmspringwinds
  • 1,147
  • 2
  • 14
  • 31
0
votes
2 answers

Opencv c++ face detection code not working

I'm trying to run the following code for face detection but there is a problem in circle( image, center,Size( faces[i].width*0.5, faces[i].height*0.5), 0, 0, 360,Scalar( 255, 0, 255 ), 4, 8, 0 ); Full code: #include…
sarmad
  • 89
  • 1
  • 3
  • 8
0
votes
0 answers

Face Detection with "Beyond Face Reality" SDK, copy to new canvas javascript

I am looking for someone advanced in the "Beyond Face Reality" SDK. A great and free face tracking framework. https://www.beyond-reality-face.com/overview We are using the SDK for a school project. We are using the CandideFaceTracking option which…
Patrick
  • 21
  • 3
0
votes
1 answer

Faces not getting detected from Kinect Feed

Below is the code for a method which I am using for detecting faces from Kinect Feed and then setting the pixels from the face into a new image. . It is triggered by a Gesture which is done by GestureFlag . The Detect method which I am calling from…
creativesol
  • 7
  • 10
0
votes
0 answers

how to make face detecting more specific

I am using openCV 2.4.10 on c++ this code to count the faces in an image, but I am not getting the right result sometimes: I tried it on 50 images; only 22 images got the right result. What should I add to make it better? int countFacesInImage(Mat…
laeemra
  • 1
  • 4
0
votes
1 answer

Android Layout align gender icon with age on facebox

I used canvas for image to draw rectangle on face detected area and age text on top. Paint paint = new Paint(); paint.setTextAlign(Paint.Align.CENTER); Canvas canvas = new Canvas(bitmap); canvas.drawRect(left, top, left + width, top + height,…
Bilal Ameer
  • 59
  • 8
0
votes
2 answers

detect and count face on image using open cv and c++

I am using opencv and C++ although i'm beginner. I am trying to detect and count faces from a set of image using Haarcascade . I only want to get the number of faces on each image . how can i edit this code to get the number of faces on…
laeemra
  • 1
  • 4
0
votes
1 answer

Mouth/lip detection based on YCbCr color space, in openCv

Hello I'm trying to detect the area of the mouth or lips. To do this I am trying to use the the method described in these papers: Paper1,Paper2. (Could only post two of the papers) They use a method where you utilize the colorspace YCbCr because the…
Holmis
  • 13
  • 3
0
votes
3 answers

Developing Face Recognition App

i'm new to developing android apps in general. I'm trying to create an application that given a certain image it would detect faces and would give me the eye locations and other info. I've done some research and i found some stuff such as, the…
synth0
  • 33
  • 1
  • 4
0
votes
1 answer

opencv Recognize function doesn't work correctly in C#

I'm using openCV library in my c# application to detect face due to my knowledge base images,but there's a problem when detecting faces,in first time my function detect correctly the person A's face and show his name,but after this detection the…
Mousa Khodaei
  • 41
  • 10
1 2 3
…
99 100