Patent ID: 6046753
Filing Date: 2000-04-04
Classification: G06T

Abstract:
An electronic image processing apparatus comprising:a first large capacity store for storing digital data representing an initial image, in which store the data is accessible as data sequences;a second large capacity store for storing digital data representing a manipulated form of said initial image;a small capacity, high speed, random access cache store for storing selected data sequences from said first large capacity store which together comprise data representing a small portion of the image; anda processor for:selecting initial image data for transfer from the first large capacity store to the cache store by mapping an identified area in the second large capacity store in which will be stored data representing an area of the manipulated form of the initial image onto a corresponding data area in the first large capacity store in which is stored data representing a corresponding area in the initial image and which corresponding data area comprises an amount of data not greater than a data storage capacity of the cache store;controlling the transfer of said selected initial data from the first large capacity storage means to the cache store;providing required transformation parameters for use in manipulation of the data stored in the cache store;employing said required transformation parameters to modify the data from the cache store, to produce manipulated data representing said identified area in the manipulated form of the image; andoutputting the manipulated data to the second large capacity store at locations therein corresponding to the identified area.