Apparatus and method for foreground detection

A foreground detection method, adapted to an electronic apparatus for detecting a plurality of foreground pixels in a target image, the foreground detection method comprising:

• calculating a foreground characteristic value by using an image intensity of each of a plurality of pixels in the target image and a background intensity of a corresponding pixel in a background model;
• determining a first threshold and a second threshold according to at least one scenic factor for capturing the target image, and filtering out a plurality of non-foreground pixels having a corresponding foreground characteristic value between the first threshold and the second threshold from pixels in the target image;
• and
• determining an image difference condition and a chroma similarity condition according to the scenic factor for capturing the target image, filtering out the plurality of non-foreground pixels having the corresponding foreground characteristic value satisfying the image difference condition and the chroma similarity condition from the pixels left by a first filter, and serving remaining pixels as the plurality of foreground pixels.