Title:
高速の画像圧縮のための方法および装置
Document Type and Number:
Japanese Patent JP4860017
Kind Code:
B2
Abstract:
An image compression scheme uses a reversible transform, such as the Discrete Hartley Transform, to efficiently compress and expand image data for storage and retrieval of images in a digital format. The image data is divided into one or more image sets, each image set representing a rectangular array of pixel data from the image. Each image set is transformed using a reversible transform, such as the Hartley transform, into a set of coefficients which are then quantized and encoded using an entropy coder. The resultant coded data sets for each of the compressed image sets are then stored for subsequent expansion. Expansion of the stored data back into the image is essentially the reverse of the compression scheme.
Inventors:
Stephen P. Pigeon
Application Number:
JP28039598A
Publication Date:
January 25, 2012
Filing Date:
October 02, 1998
Export Citation:
Assignee:
AT&T CORP.
International Classes:
H04N1/41; G06T1/00; G06T9/00; H03M7/42; H04N7/26; H04N7/30
Domestic Patent References:
| JP5103313A | ||||
| JP8228156A | ||||
| JP9187004A | ||||
| JP6178281A | ||||
| JP9247673A | ||||
| JP3162179A | ||||
| JP8317406A | ||||
| JP5244584A |
Other References:
J.D.Villasenor,Alternatives to the Discrete Cosine Transform for Irreversible Tomographic Image Compression,IEEE Transactions on Medical Imaging,IEEE,1993年12月,Vol.12, No.4,p.803-811
R.N.Bracewell, O.Buneman, H.Hao, and J.Villasenor,Fast Two-Dimensional Hartley Transform,Proceedings of the IEEE,IEEE,1986年 9月,Vol.74, No.9,p.1282-1283
C.H.Paik and M.D.Fox,Fast Hartley Transforms for Image Processing,IEEE Transactions on Medical Imaging,IEEE,1988年 6月,Vol.7, No.2,p.149-153
H.S.Hou,The Fast Hartley Transform Algorithm,IEEE Transactions on Computers,IEEE,1987年 2月,Vol.C-36, No.2,p.147-156
R.N.Bracewell, O.Buneman, H.Hao, and J.Villasenor,Fast Two-Dimensional Hartley Transform,Proceedings of the IEEE,IEEE,1986年 9月,Vol.74, No.9,p.1282-1283
C.H.Paik and M.D.Fox,Fast Hartley Transforms for Image Processing,IEEE Transactions on Medical Imaging,IEEE,1988年 6月,Vol.7, No.2,p.149-153
H.S.Hou,The Fast Hartley Transform Algorithm,IEEE Transactions on Computers,IEEE,1987年 2月,Vol.C-36, No.2,p.147-156
Attorney, Agent or Firm:
Okabe
Masao Okabe
Nobuaki Kato
Asahi Shinmitsu
Masao Okabe
Nobuaki Kato
Asahi Shinmitsu