Extract text from an image

2024 2 21
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更新时间：2024 3 15
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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!

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回答（1 个）

Ayush
Ayush 2024-3-14
编辑：Dyuman Joshi 2024-3-15
Ran in:

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Ran in:
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!

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Dyuman Joshi
Dyuman Joshi 2024-3-15
@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
Ayush 2024-3-15
In that case, knowing what exact text needs to be extracted from the image might be more helpful.
Merin
Merin 2024-3-15
@Ayush I wanted to extract all the numerical data along with reading name.
For example
Ppeak 33
Pmean 21
PEEP 9
ans so on...

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Merin
Merin
2024-2-21

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Merin
Merin
2024-3-15

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