Patent ID: 7636472
Filing Date: 2009-12-22
Classification: G06K,G06T

Abstract:
1. An image quality correction apparatus comprising: an image data selecting unit for, when inputted image data (hereinafter referred to as input image data) includes image data which causes degradation in image quality (hereinafter referred to as degradation factor data) when subjecting the input image data to correction of image quality, removing the degradation factor data from the input image data; a luminous histogram formation unit for forming a luminous histogram of image data that is outputted from the image data selecting unit; a correction amount calculation unit for calculating an amount of correction on the basis of the luminous histogram formed by the luminous histogram formation unit; and an image quality correction unit for correcting the input image data on the basis of the amount of correction that is calculated by the correction amount calculation unit; wherein said degradation factor data are pixel data which constitute a character area and are included in the input image data; wherein said image data selecting unit comprises: wherein said luminous histogram formation unit forms a luminous histogram using the luminous values of all pixels of the input image data, and a luminous histogram using the luminous values of pixels outputted from the count judgement unit; and wherein said correction amount calculation unit calculates an output of correction on the basis of the luminous histogram that is formed by using the luminous values of pixels outputted from the count judgement unit.