1. An image capturing method, comprising: capturing a first original image; detecting eye blink patterns and face smile patterns in a first preview image corresponding to the first original image, wherein the first preview image is of smaller size and lower resolution than the first original image; capturing a consecutive plurality of second original images when at least one eye blink pattern is detected in the first preview image; generating a plurality of second preview images corresponding to the plurality of second original images, wherein the plurality of second preview images are of smaller size and lower resolution than the plurality of second original images; detecting eye blink patterns and face smile patterns in the plurality of second preview images; and generating a result image by combining non-eye-blink patterns and face smile patterns derived from different portions of different original images corresponding to the first preview image and the plurality of second preview images with least eye blink patterns and most face smile patterns; wherein the different original images are selected from the first original image and the plurality of second original images.