1. An image resizing method, comprising: receiving at least one input image; scaling the at least one input image to different image resolutions to generate a plurality of scaled images; obtaining a plurality of processed images derived from the scaled images, respectively, wherein an image resolution of each of the processed images is equal to a target image resolution, and the target image resolution is different from an image resolution of the at least one input image; performing an image content analysis upon at least one image selected from the processed images and the at least one input image to obtain an image content analysis result; and creating a target image with the target image resolution by combining pixels selected from the processed images according to the image content analysis result.