I am trying to add texture and pattern of img1 to img2 to get result something like the result image img3 – Img2 is has transparent background and result Img3 must also have transparent background Img1 Img2 Img3 Answer Here is how to do that in Imagemagick. It can be done in Python/OpenCV, but I do not …
Tag: opencv
Displaying Opencv.js Matrix without cv.imshow()
Hello Stack Overflow community. I am attempting to extract the pixel values from a cropped section of an opencv matrix to a javascript array in order to feed that data into a tensor for OCR. I cannot use cv.imshow() because it interacts with the DOM and my process is on a web worker. This is what I have so fa…
Building OpenCV.js fails. CMake can’t find installed compilers?
I have the following directory structure: I am trying to build OpenCV.js I do Which results in: Both gcc and g++ are installed in the system. Prior of running this I went to ~/emsdk and ran: I am not sure why this is failing. I am trying to follow this [tutorial][1]. EDIT: I am doing this on Ubuntu, if it
OpenCV.js – detectMultiScale “This Exception cannot be caught”
I’m trying to use facial recognition via OpenCV.js, however when I call on the detectMultiScale() method of the CascadeClassifier object I receive the error: Uncaught 6446128 – Exception catching is disabled, this exception cannot be caught. Compile with -s DISABLE_EXCEPTION_CATCHING=0 or DISABLE_…
opencv.js perspective transform
I’m trying to use opencv.js to find a document in a provided image (detect edges, apply perspective transform, etc. I’ve got a reasonable set of code that (occasionally) detects edges of a document and grabs the bounding box for that. However, I’m struggling to do the perspective transform s…
“emcc” command does not recognized
I’m having issue with building this demo. https://github.com/kakukogou/opencvjs_demo_segmentation When i cd into this folder and run make command i get this error message: This is how make file looks like. Is there any issue with my environment variables. What is the proper way to compile this ? Answer …