OCR in Labview

[QuocAn17]

Hello, everybody !

1. I'm solving an OCR problem and I want to use multiple ROIs at different positions on the same image. Then output the string of characters that corresponding to each ROI. This is possible, isn't it ?, Can someone help me?
2. The image that I used to process it is of low quality so sometimes it does not work. Anybody have tips for this

Thank u so much

[raphschru]

1. According to the LabVIEW help of "IMAQ OCR Read Text 4 VI":

"ROI Descriptor specifies the ROI in which the VI performs this operation. The ROI must be a rectangle or rotated rectangle. Leave this input unwired to use the entire image for this operation."

So you cannot use the same call for several ROIs. But you can simply reiterate the function for each ROI.

2. Well, hard to say without knowing more about what you call "low quality".
Have you light reflections on the image ? motion blur ? pixelated image because of low resolution ?