1. An image capturing method, comprising: capturing a first original image; generating 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; detecting the first preview image for eye blink patterns; capturing a consecutive plurality of second original images in response to at least one eye blink pattern is detected in the first preview image; generating a plurality of second preview frames corresponding to the plurality of second original frames respectively, wherein the plurality of second preview images are of smaller size and lower resolution than the plurality of second original images; detecting the plurality of second preview images for eye blink patterns; and generating a result image based on least eye blink patterns detected on the first preview image and the plurality of second preview images; wherein the first original image, the first preview image, the plurality of second original images, the plurality of second preview images, and the result image are corresponding to at least partially the same scene.