Is it possible to ignore a feature , ex: 'color - black' in the comparison query?

[moorthi07]

Is it possible to ignore a feature , ex: 'color - black' in the comparison query?

I'm trying to compare two images , for example - a black hand and a white hand - they could be identical if the color can be ignored. Is it possible , any properties can be set in the queries?

Thanks.

[rhsimplex]

All images are greyscaled before searching. However, black and white are opposite colors, so perhaps try all_orientations=True in the search function. This will include a color inversion.

[moorthi07]

Thanks. But its not only about black and white. Any color that I like to filter out from search. If it is grey scaled, it wont detect the color difference, does it?
Also can I highlight the matching areas?