Patent ID: 6292513
Filing Date: 2001-09-18
Classification: G06T,H04N

Abstract:
An image signal converting apparatus for converting a significance signal based on the significance signal where the significance signal comprises significance elements expressing a significance value of each of two or more proximal pels comprising an image signal, said image signal converting apparatus comprising:a resolution conversion characteristics selector for selecting a resolution conversion characteristic based on the significance value of a pel being processed and the pels proximal to the pel being processed; anda resolution converter for converting a resolution of the significance signal by applying the resolution conversion characteristic selected by said resolution conversion characteristic selector;wherein the resolution conversion of an image is performed using the significant pels within an arbitrary object shape; andwherein the resolution conversion of the image is performed using the significant pels by referring to the significant signal values for the pels proximal to the pel being processed, and wherein the significance signal is different from luminance signals representing the pel values, thus the resolution conversion is performed by referring to significance information indicating whether the target pel is positioned within or outside the arbitrary object shape.