METHOD FOR DETERMINING EXISTENCE OF IMAGE ON DOCUMENT IN IMAGE SCANNING DEVICE

摘要

The invention originals using the shading data when applying a weight to the shading correction is implemented by the image scanning device relates to both surfaces (the original surface and / or if the original) image determines how the presence or absence of the document on both sides of the image scanning device, and to improve the ease of use of the image scanning apparatus by determining the presence or absence of the image. ; The present invention to achieve this, in the image scanning device using a shading correction method for determining whether the image is present on both sides of the document, (a) the shading correction data for the shading correction step by applying a weight to the shading correction, and stores the image data of the manuscript; (B) step of storing the gamma correction and shading correction is the image data; (C) determining that determines whether or not the gamma-corrected image data, the white image, and the gamma-corrected image data is not the image in the original surface if the white image; (D) removing the shading-corrected image data from the gamma-corrected image data, and the gamma-corrected image data is removed by the image data is determined whether or not the white image, if the determination is determined as a result of white image if the original determining that there is no image on; characterized in that it comprises a.