Replacing images

This example was written in response to the question Click How to convert colored images to black and white?

replaceimage

##GITHUB:https://github.com/itext/i7js-examples/blob/develop/src/main/java/com/itextpdf/samples/sandbox/images/ReplaceImage.java##

##GITHUB:https://github.com/itext/i7ns-samples/blob/develop/itext/itext.samples/itext/samples/sandbox/images/ReplaceImage.cs##