I would like to render a custom text on an image using opencv, while having a white outline around the text, with the inside of the text being black. Currently I am only able to print the text in a single static color (black in this case) like so:

cv2.putText(img, "My text", (x, y), font, font_size, (0, 0, 0), font_thickness, lineType = cv2.LINE_AA)

How can I achieve an effect like the one shown below, where the outline of the text is printed in white, and the inner part in black?

Note: The text is placed on an image, so the remaining space (the grey space in the example image) around the text should be transparent.

CodePudding user response：

You could draw the text twice on the image: one for your outline and the other for your text.

cv2.putText(image,"text",(180,150),cv2.FONT_HERSHEY_COMPLEX,3,(255,255,255),16,cv2.LINE_AA)
cv2.putText(image,"text",(180,150),cv2.FONT_HERSHEY_COMPLEX,3,(0,0,0),4,cv2.LINE_AA)