1. A method for resolution conversion of textual content or Magnetic Ink Character Recognition (MICR) content in an image, the method being implemented in a computer system comprising one or more processors configured to execute one or more computer program modules, the method comprising: receiving image data of the image, the image data having a plurality of image planes having essentially the same resolution, wherein at least one of the plurality of image planes includes textual image data configured to be rendered by a print engine with an output resolution different from the remaining image planes and wherein the textural image data includes high resolution text characters, MICR characters, or both; processing the at least one of the plurality of image planes to identify one or more characters contained therein and to obtain character encoding data and positional information for the one or more identified characters; and processing the obtained character encoding data and the obtained positional information to generate an output data at the output resolution for the at least one of the plurality of image planes.