image confidence score not a good reflection of quality

[jasonab]

The image confidence score is purely based on the number of images retrieved, but has no relationship to the relative scores of the images. Confidence score should reflect the difference in the scores of the various images retrieved, as well as the absolute score of the image.

For example, if several images have a similar score, we are not confident which one is correct, but if 10 images have poor scores and one has a good score, we can be fairly confidence.