Python OpenCV cv2 drawing rectangle with text

Question

I draw a rectangle on my image using

cv2.rectangle(frame,(x,y),(x1,y1),(0,255,0),2)

I would like to draw rectangles with text information on t

Answer 1

you may need to extend your code with a function that takes your text as input, position_x, position_y .. and it will measure the size of the letters and dynamically set a rectangle width based on that.

you can use: cv2.getTextSize(text, font, font_scale, thickness)

to get how many pixels will it use and then use it to define the rectangle width.

Answer 2

You can use cv2.putText() to overlay text information on top of a rectangle. For example, you can grab the contour coordinates, draw a rectangle, and put text on top of it by shifting it upwards.

x,y,w,h = cv2.boundingRect(contour)
image = cv2.rectangle(image, (x, y), (x + w, y + h), (36,255,12), 1)
cv2.putText(image, 'Fedex', (x, y-10), cv2.FONT_HERSHEY_SIMPLEX, 0.9, (36,255,12), 2)

You will get something like this