Questions tagged as 'opencv'

Tagged questions
1
answer

Calculate percentage of a face in an image

How would be the calculation of porcetangem of a face in an image? Suppose I had a 3x4 photo of a user, but he had a lot of hair covering his face. Is there any way to detect that the image does not have a minimal percentage of the user's face?...
asked by 29.08.2014 / 02:53
1
answer

How to remove area of interest from the background of an image?

I'm starting to work with image processing in pattern recognition, and I'm having to pre-render the images I'll use. First, I need to highlight the region of interest in the background of the image, can anyone tell me the best technique for this...
asked by 06.10.2018 / 13:50
1
answer

Depth on some opencv methods

What is the depth parameter that appears in many opencv functions? For example of filter2D() , what I understood by what is in the documentation would be the number of bits to represent the intensity, is it correct?     
asked by 23.10.2018 / 08:26
1
answer

Error processing large images with openCV

I'm trying to render an orthomosaic, the problem is that the image is too large, with other smaller maps I can handle normally, but when I will render a map it greater than the error in the conversion from RGB to HSV, but this error occurs becau...
asked by 20.09.2017 / 13:42
2
answers

How to create a counter in face detection?

As you can see in the code below, it only detects the faces with haar cascade, I would like to know how I can display the number of people currently detected on the webcam. from __future__ import print_function #importa a funcao da biblioteca...
asked by 03.06.2018 / 18:22
0
answers

Android + OpenCV: SurfaceTexture has been abandoned

I'm developing an application in Eclipse with OpenCV. The application consists of detecting and recognizing objects (predefined in the database) in real time. Initially there is a menu where the user can view the objects that the database has an...
asked by 27.02.2015 / 06:31
1
answer

Generate new image centered on a point

I did a rendering and found a dot in the image that meets my criteria. I need to cut the original image into a smaller one (120x120) centered at this point. I tried the following: img = cv2.imread(path,cv2.IMREAD_GRAYSCALE) mx = pegarPontox()...
asked by 18.09.2018 / 17:24
1
answer

C ++ - Convert Mat to array of integers in Opencv?

I'm doing an image manipulation project using OpenCV . I need to parse the pixels values of a "binarized" image, for this I am trying to convert my Mat file image to a array of integers, more specifically an array of integers. I'm tryi...
asked by 02.09.2016 / 21:20
1
answer

How to plot the colors of each pixel in the image?

I'm working on image color recognition, so I'm converting the RGB image to Lab because it's the closest color space to human vision. After that, I get each one of the Lab's 3 channels and I want to plot in the 3D graphic the color variations tha...
asked by 13.10.2018 / 01:59
1
answer

Can I call one program within another?

I want to connect one program inside the other because I have a project (main, 7 Classes) in C ++ / OpenCV that should call a program also in C ++ / integrated with the tesseract, pass and receive an object so that the program will do a processi...
asked by 10.06.2014 / 23:01