如何获得文字的颜色？

Question

I've been using the Microsoft OCR API and I'm getting the text from the images but I would like to know if the text is in an specific color or has an specific background color.

For example I have the following image and I would like to know if there is text in red ie image

I thought that this line:

 string requestParameters = "language=unk&detectOrientation=true";

would help me to establish the parameters I'd like to recieve from the image so if I wanted to know the color in a line of words. So I added a visual feature like this:

 string requestParameters = "visualFeatures=Color,language=unk&detectOrientation=true";

But this did not solve the problem.

Also: Can I mix the uriBase link from the image analysis and the one from the OCR?

Answer 1

There is currently no way to retrieve the color information and OCR results in a single call.

You could try using the bounding boxes returned from OCR to crop the original image, and then send the crop it to the analyze endpoint with visualFeatures=color to get the color information for the detected text.

Answer 2

According to documentation , the possible request parameters of this api are:

language, detectOrientation

and the returned metadata has these entities:

orientation, language, regions, lines, words, boundingBox, text

It will be possible to combine the OCR algorithm with another one of the computer vision algorithms to detect the dominating colors in the text regions that the OCR identified.