Digital image capture device and digital image processing method thereof

An image capture device includes an image capture unit, a switching unit, a calculation unit, a comparison unit, and a display unit. The image capture unit captures consecutive images. The switching unit switches to a playback mode. The calculation unit calculates each of gradient values between adjacent pixels within each the image and cumulates a total value composed of the gradient values of the image. The comparison unit compares different total values corresponding to different images to determine the image having a maximum total value. The display unit displays the acquired image.