Image processing method and apparatus

摘要

An image processing method operable in a hand held image acquisition device comprising at least one camera comprises obtaining an image with the camera and identifying at least one face region detected within the image. A mean intensity of intensity values for pixels of at least one identified face region is determined. Responsive to the mean intensity for a face region being less than a threshold amount, at least some of the pixels of the image are lightened. A contrast of pixels of the image is enhanced as a function of pixel intensity distribution within the image and a contrast of pixels of the face region is enhanced as a function of pixel intensity distribution within the face region. The contrast enhanced pixels of the face region are blended with pixels of the image which have been lightened and/or whose contrast has been enhanced to provide a processed image.

主权项

1. An image processing method operable in a hand held image acquisition device with a user-facing camera comprising:
a) obtaining an image with the user-facing camera; b) identifying at least one face region within the image; c) determining a distribution of intensity values for pixels of at least one identified face region; and d) responsive to less than a threshold number of pixels for an identified face region having intensity values having a lowest intensity value, signalling to a user that a lens for the user-facing camera needs to be cleaned.