What are good algorithms for vehicle license plate detection? [closed]

Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 3 years ago. Improve this question Background For my final project at university, I’m developing a vehicle license plate detection application. … Read more

Logo recognition in images [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Stack Overflow. Closed 6 years ago. Improve this question Does anyone know of recent academic work which has been done on logo recognition in images? Please answer only … Read more

Camera position in world coordinate from cv::solvePnP

I have a calibrated camera (intrinsic matrix and distortion coefficients) and I want to know the camera position knowing some 3d points and their corresponding points in the image (2d points). I know that cv::solvePnP could help me, and after reading this and this I understand that I the outputs of solvePnP rvec and tvec … Read more

Classification of detectors, extractors and matchers

I am new to opencv and trying to implement image matching between two images. For this purpose, I’m trying to understand the difference between feature descriptors, descriptor extractors and descriptor matchers. I came across a lot of terms and tried to read about them on the opencv documentation website but I just can’t seem to … Read more

Convert RGB to Black & White in OpenCV

I would like to know how to convert an RGB image into a black & white (binary) image. After conversion, how can I save the modified image to disk? Answer AFAIK, you have to convert it to grayscale and then threshold it to binary. 1. Read the image as a grayscale image If you’re reading … Read more

Converting an OpenCV Image to Black and White

How do you convert a grayscale OpenCV image to black and white? I see a similar question has already been asked, but I’m using OpenCV 2.3, and the proposed solution no longer seems to work. I’m trying to convert a greyscale image to black and white, so that anything not absolutely black is white, and … Read more