Adding large TYPE_BYTE_BINARY image to pdf document generates distorted result

See attached small.jpg and large.jpg added to attached rgb.pdf and bn.pdf using attached Image2Pdf2ImageBlackAndWhite2PDF.java.

Adding both small.jpg and large.jpg to rgb.pdf is OK
Adding small.jpg, converted to black and white, to bn.pdf is OK
Adding large.jpg, converted to black and white, to bn.pdf is NOK: the resulting image is distorted.