METHOD AND SYSTEM FOR GENERATING HIGH RESOLUTION IMAGES USING RESIDUAL IMAGES

A method and system for generating high-resolution images using residual images are disclosed. A method for generating a high-resolution image using a residual image according to an embodiment of the present invention comprises the steps of: generating a reference image for a color original image (M...

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Hauptverfasser: KIM HEE SEOB, OH HAN
Format: Patent
Sprache:eng ; kor
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Zusammenfassung:A method and system for generating high-resolution images using residual images are disclosed. A method for generating a high-resolution image using a residual image according to an embodiment of the present invention comprises the steps of: generating a reference image for a color original image (MS) and black-and-white original image (PAN), respectively, when the color original image (MS) and black-and-white original image (PAN) which are satellite images of a shooting range on the ground from an original image memory unit are input; generating residual images for each color original image (MS) and black-and-white original image (PAN) using each reference image; upsampling a first residual image (MS_Res) of the color original image (MS) to upwardly adjust the resolution of the first residual image (MS_Res); calculating RGB values for each pixel from an intensity value for each pixel in a second residual image (PAN_Res) of the black-and-white original image (PAN); correcting RGB values for each pixel in the upsampled first residual image within a range of the color residual image consisting of the calculated RGB values for each pixel; and applying the corrected first residual image (MS_Res_new) to a reference image (MS_Ref) of the color one image (MS) to obtain a final image (MS_Ref+MS_Res_new). The present invention can generate color satellite images with high resolution. 잔차영상을 이용한 고해상도 영상 생성 방법 및 시스템이 개시된다. 본 발명의 일실시예에 따른 잔차영상을 이용한 고해상도 영상 생성 방법은, 원영상 메모리부로부터 지상의 촬영 범위를 위성 촬영한 컬러원영상(MS) 및 흑백원영상(PAN)이 입력되면, 컬러원영상(MS) 및 흑백원영상(PAN)에 대해 각각의 기준영상을 생성하는 단계와, 각각의 기준영상을 이용하여 컬러원영상(MS) 및 흑백원영상(PAN)에 대해 각각의 잔차영상을 생성하는 단계와, 컬러원영상(MS)의 제1 잔차영상(MS_Res)을 업샘플링하여 제1 잔차영상(MS_Res)의 해상도를 상향 조정하는 단계와, 흑백원영상(PAN)의 제2 잔차영상(PAN_Res) 내 픽셀 별 Intensity값으로부터 픽셀 별 RGB값을 산출하는 단계와, 상기 산출한 픽셀 별 RGB값으로 이루어진 컬러잔차영상의 범위 내에서, 상기 업샘플링한 제1 잔차영상 내 픽셀 별 RGB값을 보정하는 단계, 및 상기 보정된 제1 잔차영상(MS_Res_new)을 컬러원영상(MS)의 기준영상(MS_Ref)에 적용하여, 최종 영상(MS_Ref+MS_Res_new)을 획득하는 단계를 포함한다.