Patent ID: 8432415

Claim:
An image processing method for a portable device with a display having a stream of drawing as an input for selecting at least a portion of an image, wherein the stream of drawing comprises an initial point, an end point, and a plurality of drawing connection points between the initial point and the end point, the method comprising: the portable device identifying the input as a closed region input by identifying a minimum external border of the stream of drawing, according to relative coordinates of the initial point, the end point, and the drawing connection points of the stream of drawing on the display, equally dividing an image region enclosed by the minimum external border into several sub-regions, identifying a first sub-region and a second sub-region where the initial point and the end point are located respectively, identifying the input as the closed region input when the second sub-region and the first sub-region are overlapping or adjacent to each other and identifying the input as the closed region input when the second sub-region and the first sub-region are neither overlapping nor adjacent to each other but a third sub-region in which at least one of the drawing connection points on the stream of drawing and close to the end point is located is overlapping or adjacent to the first sub-region; and the portable device performing an image magnification operation.