When it comes to Optical Character Recognition (OCR), the recognition's accuracy greatly depends on the quality of the image captured. Therefore, it is important to position and mount cameras in a specific way to get the best and most accurate OCR processing.
First and foremost, it is important to reduce image complexity. This means minimizing the amount of visual clutter and distractions in the image so that the OCR algorithm can focus on the text it needs to recognize. This can be achieved by positioning the camera in a location with a clear view of the text, avoiding obstructions or reflections that could interfere with the OCR process.
Additionally, the angle of the camera is important. For the best OCR accuracy, the camera should be positioned almost level with the text to be recognized. This helps to avoid distortions that can occur from viewing the text at an angle. The distance between the camera and the text should also be carefully considered, as the optimal distance may vary depending on the size and font of the text being recognized.
Finally, it is important to have a specific Pixels On Target (POT) for accurate detection. POT refers to the number of pixels that represent the text to be recognized in the image. This should be large enough to ensure that the text is captured with sufficient detail but not so large that the image becomes unnecessarily complex. The exact POT required should be around 250-400 px/m. There are also other factors, such as the lighting conditions and image resolution.
Overall, by carefully positioning and mounting cameras to minimize image complexity, ensuring the camera angle is almost level, and using a specific POT, it is possible to maximize the accuracy of OCR processing and ensure that text is recognized as accurately as possible.
The attached document shows our recommended position of cameras.