System and method for image re-orientation
A redirection, image technology, applied in the direction of image analysis, image enhancement, graphic image conversion, etc.
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[0022] Although convenient to use mobile device cameras to capture images of documents (eg, identification cards), there are some challenges. Since the direction of the acquired image depends on how the mobile device (e.g., mobile phone, tablet, etc.) is oriented (e.g., upside down, sideways, etc.) during image capture, the captured image may not be in a vertical position. When the uploaded ID image is uploaded for verification, inconsistent and incorrect image orientation may cause difficulty in verification. Therefore, it is desirable to provide an image orientation correction mechanism.
[0023] In the current technology, the image orientation is calibrated by relying on image orientation information (for example, Exif information) stored in the header of the image file. However, not all mobile devices are equipped with an orientation sensor to record such image orientation information, and some image formats (for example, PNG) do not store such header information. Even if i...
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