I used this document and the IsBlank() method (https://reference.aspose.com/net/pdf/aspose.pdf/page/methods/isblank) on this highest detention sensitivity (0.01).
Test8.pdf (138.1 KB)
It seems to detect this as a blank page when it should considered as non-blank.
How this PDF was created was by adding shapes to a document in Microsoft Word then saving as PDF. Does anyone know how to detect microsoft word added shapes or have a method to recognize the non-white color in this document?
Maybe there is a procedure for checking each pixel to whether it’s color is white?