1. A computer-implemented method for rendering a text image on a display device, comprising: accessing, using a computer device, an image lookup table having a set of encoded data for one or more text characters associated with a text string to be rendered in an image; reading, using a computer device, the set of encoded data from the image lookup table to determine first and second encoding data for one of the text characters associated with the text string, the first encoding data for the one of the text characters defining information about the position of the text character in the text string and the second encoding data for the one of the text characters defining a reference to a field of pixels in the image lookup table storing a set of pixel values defining the image to be rendered for the one of the text characters; determining, using the computer device, pixel values for the one of the text characters from the referenced field of pixels for the one of the text characters as stored within the image lookup table to analyze for rendering at a particular position within the image; determining, using the computer device, a center position of the one of the text characters stored in the field of pixels defined by the second encoding data for the one of the text characters based on the first encoding data for the one of the text characters; and rendering, using the computer device, pixels of the one of the text characters at a particular position within the image based on the location of the center position of the one of the text characters.