this is a part of my OCR code. This part looks for a special word in a scanned PDF and prints this out. I have like 10 Queries like this and all print me the word I am looking for. Now I want to get the found words saved in a CSV, but I don’t know how to do that.
Tag: ocr
cv2.error (-215:Assertion failed) reader.ptr != NULL in function cvDrawContours
So I’m trying to create a license plate detection program and I have been following a guide for that, (https://github.com/nicknochnack/ANPRwithPython/blob/main/ANPR%20-%20Tutorial.ipynb) however I am currently running into a problem. I have also tried to change “location” to 0 or [0] but to …
Pytesseract read coloured text
I am trying to read coloured (red and orange) text with Pytesseract. I tried to not grayscale the image, but that didn’t work either. Images, that it CAN read Images, that it CANNOT read My current code is: Answer This little function (below) will do for any color ec9Ut.png Thresh result x18MN.png Thres…
How can I extract numbers from video frames using Tesseract OCR?
I am interested in extracting numbers from standardized videos (always HD resolution @ 1920×1080, 30 FPS) I have. Numbers always appear in fixed sections of the screen and are never missing. My approach would be to: Save video in frame by frame PNGs Load a single PNG frame Select the areas of interest (t…
Bounding box detection for characters / digits
I have images, which look like the following: I want to find the bounding boxes for the 8 digits. My first try was to use cv2 with the following code: Unfortunately that doesn’t work. Does anyone have an idea? Answer The problem in your solution is likely the input image, which is very poor in quality. …
How can I read a full sequence of digits using tesseract instead of first digit only
I have the following clear binary image, and I want to read the digits using tesseract. My problem is that tesseract is reading only the first digit (5)! How can I make tesseract read the full sequence? Output: 5 < o x o c > Answer You will have to do some amount of preprocessing before you push the ima…
Pytesseract not detecting a digit which might be a picture within a picture
I’m trying to extract the number from the image string given below I have no problem in extracting digits from normal text, but the digit in the above strip seems to be a picture within a picture. This is the code I’m using to extract the digit. I’ve tries all possible psm from 1 to 13, and …
How to convert and save a list of ints to a bitmap image?
I’m trying to convert a list of numbers that I believe represent bytes that together constitute a bitmap image, into said image file (saved to disk) and/or simply converted into a form usable by tesseract. I’d prefer to be able to visualize the images, though, to make sure the conversion actually …
How to de-skew a text image and retrieve the new bounding box of that image Python OpenCV?
Here’s a receipt image that I’ve got and I’ve plotted it using matplotlib and If you see the image the text in it is not straight. How can I de-skew and fix it? I think if we want to de-skew first we have to find the edges, so I tried to find the edges using canny algorithm and then get
Python OpenCV skew correction for OCR
Currently, I am working on an OCR project where I need to read the text off of a label (see example images below). I am running into issues with the image skew and I need help fixing the image skew so the text is horizontal and not at an angle. Currently the process I am using attempts to score different