OCR function does not recognize number 8
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Hello,
I do have a Problem with the ocr Function of Matlab.
It does a very poor job, particulary in recognizing the number 8.
![untitled.bmp](https://www.mathworks.com/matlabcentral/answers/uploaded_files/236952/untitled.bmp)
This the i am giving into the ocr function, however, the ocr funktion does return 6 or 9 or 5 more often, than it recognizes an 8.
I added some pictures in the attached zip archive if somebody wants to have a go.
This is the code i am using:
image=rgb2gray(img_rgb(leftedge:rigthedge,upperedge:loweredge);
OcrObjekt=ocr(image,'CaracterSet','0123456789.','Textlayout','Word');
result=strtrim(OcrObjekt.Words{1});
Thank you for your answers!
2 commentaires
KALYAN ACHARJYA
le 4 Sep 2019
Modifié(e) : KALYAN ACHARJYA
le 4 Sep 2019
May work?
Do some sort of preprocessing on images before applying the OCR.
Réponses (1)
Devineni Aslesha
le 10 Sep 2019
While passing the image data to ocr function, no need to convert the image from RGB to gray as ocr function converts truecolor or grayscale input images to a binary image, before the recognition process using Otsu’s thresholding technique.
Use the below code for reference.
I = imread('Image8.png');
txt = ocr(I,'CharacterSet','0123456789.','Textlayout','Word');
txt.Text
Here, Image8 is the image provided in the question. It is showing the correct result.
Doc Link:
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