Image encoding apparatus and method, image display apparatus and method, image processing system and image sensing apparatus,申请号US20020327184-传众专利搜索

Image encoding apparatus and method, image display apparatus and method, image processing system and image sensing apparatus

申请公布号：US7079696(B2)

申请号：US20020327184

申请日期：2002.12.24

申请公布日期：2006.07.18

申请人：

CANON KABUSHIKI KAISHA

发明人：KOIDE YUJI

分类号：G06K9/36;H04N5/225;G06T9/00;H04N1/41;H04N7/26;H04N7/30;H04N7/46;H04N101/00

主分类号：G06K9/36

摘要：Disclosed are an image encoding apparatus and method for generating an image file in which it is possible to check the content of an image, which has been compressively encoded using a wavelet transform, not only in an apparatus that is capable of expanding compressed image data compressively encoded using a wavelet transform but also in an apparatus that is capable of expanding compressed image data compressively encoded using a discrete cosine transform (DCT) but incapable of expanding image data compressively encoded using a wavelet transform. The image encoding apparatus has a first compressing encoder 2 for performing compressing encoding using a wavelet transform and a second compressing encoder for performing compressing encoding using a discrete cosine transform. First and second compressed image data resulting from this encoding is gathered in a single image file in a file creation unit 4 . By analyzing the image file using a file analyzer 6 , even an apparatus having only expansion means that uses DCT can check the content of an image if the apparatus expands the second compressed image data.