1. A method for converting an image size in a wireless terminal, the method comprising the steps of: outputting two images from a camera module, whereby the two images are two interlaced fields of a television scanning scheme; determining a size of the images output from the camera module; extracting one image of the two images output from the camera module; resizing the size of the extracted image to a size suitable for a display unit through at least two resizing steps when the size of the image output from the camera module differs from the size of the image to be output through the display unit; and outputting the resized image, wherein resizing the extracted image comprises dividing columns of pixels of the image into a plurality of groups of columns based on a pattern of the columns, and removing one of the plurality of groups of columns.