In blog Better Biometrics in Android P they said: "To keep users safe, most apps and devices have an authentication mechanism, or a way to prove that you're you. These mechanisms fall into three ca...

I am creating a desktop/winform application that reads tif/pdf payable invoices and extract all the invoice information to store into database. I can read the standard barcodes(QR Code, Code...

A OpenCV beginner and bad math. My job is to apply the Gabor filter to a normalized image. And I only know that OpenCV has a getGaborKernel function, and i want to know the return Matrix of this fu...

I need to find the iris edges, the input images that I use is not a fully rounded iris, sometimes it might be covered by the eyelid. I found a summary of a journal article to find the iris even its...

I am trying to detect the eyes' irises but HoughCircles returns 0 circles. The input image(eyes) is: Then I made the following things with this image: cvtColor(eyes, gray, CV_BGR2GRAY); morpho...

I am now working on an eye tracking project. In this project I am tracking eyes in a webcam video (resolution if 640X480). I can locate and track the eye in every frame, but I need to locate the p...

I'm currently running the following Python (OpenCV 3): out = cv2.linearPolar(self.roi, center, self.iris_radius, cv2.WARP_FILL_OUTLIERS) Input image: / Result: (source: opencv.org) (source: open...

I am newbie to openCV, but I want to create iris recognition program. Although the system with webcam can detect the eyes, it cannot, however, detect the circular iris. I am using the Hough Circle ...