Extract text from an image

Hi, I want to extract text from this image. I used colour thresholder app to extract text of same colour but in this case the texts are of different colours. Could somebody please help? Thanks!

[Dyuman Joshi]

See - https://in.mathworks.com/help/vision/text-detection-and-recognition.html?s_tid=CRUX_lftnav

Answer 1

[Ayush]

Hey Merin,

I understand you are looking to extract text from the given image.

You can use the "ocr" function in the following way to achieve this in MATLAB:

img = imread("thumbnail_5.jpg");
imshow(img)

ocrResults = ocr(img)

ocrResults = 
  ocrText with properties:

                      Text: 'xfMV Press, Contr) Adit↵↵Stats↵- Pressure Support↵↵1↵| Nebulizer↵↵_ patient↵↵ ↵↵ ↵↵ ↵↵'
    CharacterBoundingBoxes: [86×4 double]
      CharacterConfidences: [86×1 single]
                     Words: {16×1 cell}
         WordBoundingBoxes: [16×4 double]
           WordConfidences: [16×1 single]
                 TextLines: {9×1 cell}
     TextLineBoundingBoxes: [9×4 double]
       TextLineConfidences: [9×1 single]

ocrResults.Text

ans = 
    'xfMV Press, Contr) Adit
     
     Stats
     - Pressure Support
     
     1
     | Nebulizer
     
     _ patient
     
      
     
      
     
      
     
     '

The variable "ocrResults" will contain all the text extracted from the image.

For further details on the "ocr" function,you can refer the MathWorks documentation page at: https://in.mathworks.com/help/vision/ref/ocrtext.html

Hope this helps!

[Dyuman Joshi]

@Ayush, as you can see in my edit above to your answer, ocrText does not work as expected i.e. it does not provide all the text. Nor is the text read in a structured manner.

[Ayush]

In that case, knowing what exact text needs to be extracted from the image might be more helpful.

[Merin]

@Ayush I wanted to extract all the numerical data along with reading name.

For example

Ppeak 33

Pmean 21

PEEP 9

ans so on...