prototxt file with the model description can be found in opencv_contrib/modules/text/samples/textbox.prototxt. The original repository with the modified SSD Caffe version. This class uses OpenCV dnn module to load pre-trained model described in. This class is representing to find bounding boxes of text words given an input image. Let’s detect some text in images Master Generative AI for CV Get expert guidance, insider tips & tricks. TextDetectorCNN class provides the functionallity of text bounding box detection. You will need OpenCV > 3.4.3 to run the code. More.Īn abstract class providing interface for text detection algorithms. Figure 3 displays the results of our script and orientation detection. The ERStat structure represents a class-specific Extremal Region (ER). We are now ready to apply text OSD Open a terminal and execute the following command: python detectorientation.py -image images/normal.png INFO detected orientation: 0 INFO rotate by 0 degrees to correct INFO detected script: Latin. Try it out, and see what cool text styles you can use on your OpenCV applications.Base class for 1st and 2nd stages of Neumann and Matas scene text detection algorithm. Multiple True Type Fonts working on OpenCV Just create and use different font objects.įont_futura = uetype("Futura-Book.ttf", 80)įont_papyrus = uetype("PAPYRUS.ttf", 80)ĭraw.text((10, 700), text_to_show, font=font_papyrus)ĭraw.text((10, 300), text_to_show, font=font_futura) # Convert the image to RGB (OpenCV uses BGR)Ĭv2_im_rgb = cv2.cvtColor(image,cv2.COLOR_BGR2RGB)įont = uetype("PAPYRUS.ttf", 80)ĭraw.text((10, 700), text_to_show, font=font)Ĭv2_im_processed = cv2.cvtColor(np.array(pil_im), cv2.COLOR_RGB2BGR)
Opencv text on image full#
You can place the font file in the same directory as the Python script, or you can give the full path to the fonts file. We just need to remember to re-order the colour channels, as OpenCV uses BGR, and PIL uses RGB. We pass the OpenCV image to PIL, let PIL draw the text on it, and get the image back to OpenCV. Note: although the function is named truetype() it can use Open Type fonts also.įrom PIL import ImageFont, ImageDraw, Imageįont = uetype("arial.ttf", 15) Using the uetype() function, you can load a True Type or an Open Type font file. Pillow has an ImageFont module, which is used to draw text on images. But we can achieve it using the handy Pillow/PIL package.
Well, OpenCV itself cannot load custom fonts. "Hershey Script Complex : " + text_to_show,įontFace=cv2.FONT_HERSHEY_SCRIPT_COMPLEX, These algorithms can be used to detect and recognize faces & text, identify objects, track moving objects, etc. OpenCV provides more than 2500 optimized algorithms. It is mainly focused on image processing. "Hershey Script Simplex : " + text_to_show,įontFace=cv2.FONT_HERSHEY_SCRIPT_SIMPLEX, OpenCV is an open-source computer vision library written in C/C++. "Hershey Complex Small : " + text_to_show,
Text_to_show = "The quick brown fox jumps over the lazy dog" Let's use the following simple script to see how all of them looks like,īlank_image = np.zeros((500,1000,3), np.uint8) In OpenCV, we have the following 8 fonts available, Have you wished that you could use a specific True Type or Open Type font on OpenCV?įirst, let's see what the built-in font choices we have in OpenCV.
OpenCV also gives you a choice from a handful of fonts - all variants of the "Hershey" font.īut, there may come a point where you want more fonts. You just need to specify the position, colour, scale (font size), and which the font to use as the minimum parameters. With just one line of code, you can add text anywhere on the image. You will need OpenCV > 3.4.3 to run the code. OpenCV has a built-in simple function to add text on your images - the cv2.putText() function.
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