Still-image taking camera

• US 5,880,778 A
• Filed: 04/19/1996
• Issued: 03/09/1999
• Est. Priority Date: 05/17/1995
• Status: Expired due to Fees

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Akagi, Hiroshi
• Primary Examiner(s): GARBER, WENDY RAE
• Application Number:
  US08/635,382
• Time in Patent Office: 1,054 Days
• Field of Search: 348/218, 348/220, 348/221, 348/222, 348/231, 348/232, 358/261.3, 358/261.4, 358/426, 358/432, 358/433, 382/236, 382/232, 382/173, 382/284, 382/282, 382/248, 382/250
• US Class Current: 348/218.1
• CPC Class Codes: H04N 1/04 Scanning arrangements , i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versaH04N1/387 takes precedence
• CPC Class Codes: H04N 1/32128 attached to the image data, e.g. file header, transmitted message header, information on the same page or in the same computer file as the image for information embedded in the image H04N1/32144
• CPC Class Codes: H04N 1/41 Bandwidth or redundancy reduction by scanning H04N1/17 ; methods or arrangements for coding, decoding, compressing or decompressing digital video signals H04N19/00
• CPC Class Codes: H04N 2201/0414 Scanning an image in a series of overlapping zones
• CPC Class Codes: H04N 2201/04787 by changing or controlling the addresses or values of pixels, e.g. in an array, in a memory, by interpolation
• CPC Class Codes: H04N 2201/3225 of data relating to an image, a page or a document
• CPC Class Codes: H04N 2201/3242 of processing required or performed, e.g. for reproduction or before recording H04N2201/3256 and subgroups take precedence

Abstract

In a still-image camera for taking a plurality of still-images of divisions of an object area and synthesizing the still images to obtain a highly fine image, an improvement is made to realize reduction in memory capacity and in processing time for image synthesizing, thus assuring real-time image processing at a reduced cost. The still-image camera includes an image input portion for picking-up a plurality of still-pictures of divisions of an object area, a divided image compressing portion for generating compressed divided-area images by compressing the divided still-images input from the image input portion, and a synthesizing information extracting portion for extracting information necessary for image synthesizing from the divided-area images input from the image input portion before compression. The still image camera further includes a compressed divided-image storage for storing therein compressed divided-area images and a compressed divided-image synthesizing portion for synthesizing compressed divided-area images stored in the compressed divided-image storage to a compressed entire-area image according to the synthesizing information extracted from the divided-area images by the synthesizing information extracting portion.

Claims

1. A still-image taking camera comprising:

an image input portion for taking a plurality of still-images of divisions of an area of an object;

a divided-image compressing portion for generating compressed divided-area images by compressing the divided-images taken and input by the image input portion;

a synthesizing information extracting portion for extracting synthesizing information necessary for image synthesizing from the divided-area images taken and input by the image input portion and not yet compressed by the divided-image compressing portion;

a compressed divided-image storage for storing therein compressed divided-area images obtained by the divided-image compressing portion; and

a compressed divided-image synthesizing portion for generating a compressed entire-area image by synthesizing the compressed divided-area images stored in the compressed divided-image storage on the basis of the synthesizing information extracted by the synthesizing information extracting portion.

2. The still-image taking camera as defined in claim 1, wherein the compressed divided-image synthesizing portion comprises:

a part elongating portion for elongating only a local part of each stored compressed divided-area image, the local part being necessary for synthesizing each stored compressed divided-area image;

a binding portion for connecting local-part images elongated by the part elongating portion; and

a part compressing portion for compressing local-part images connected with each other by the binding portion.

3. A still-image taking camera comprising:

an image input portion for taking a plurality of still-images of divisions of an area of an object;

a divided-image compressing portion for generating compressed divided-area images by compressing the divided-images taken and input by the image input portion;

a synthesizing information extracting portion for extracting synthesizing information necessary for image synthesizing from the divided-area images taken and input by the image input portion and not yet compressed by the divided-image compressing portion;

a synthesizing information adding portion for adding the synthesizing information extracted by the synthesizing information extracting portion to each compressed divided-area image generated by the divided-image compressing portion; and

a compressed divided-image output portion for outputting each compressed divided-area image having synthesizing information attached thereto by the synthesizing information adding portion.

4. A camera comprising:

imaging means for imaging an object and providing a plurality of divided image portions of the object;

extraction means for extracting synthesizing information from the divided image portions;

compression means for compressing the divided image portions;

storage means for storing the compressed divided image portions; and

synthesis means for generating a synthesized compressed entire image of the object by synthesizing the stored compressed divided image portions based on the extracted synthesizing information.

5. The camera of claim 4, wherein said synthesis means decompresses predetermined parts of the stored compressed divided image portions, combines the decompressed predetermined parts and compresses the combined parts to provide the synthesized compressed entire image.

6. The camera of claim 5, wherein said synthesis means aligns the decompressed predetermined parts based on the extracted synthesizing information prior to combining the decompressed predetermined parts.

7. The camera of claim 4, wherein the extracted synthesizing information comprises motion vectors derived from adjacent ones of the plurality of divided image portions.

8. A method of image synthesis comprising the steps of:

a) imaging an object and providing a plurality of divided image portions of the object;

b) extracting synthesizing information from the divided image portions;

c) compressing the divided image portions;

d) storing the compressed divided image portions; and

e) generating a synthesized compressed entire image of the object by synthesizing the stored compressed divided image portions based on the extracted synthesizing information.

9. The method of image synthesis of claim 8, wherein said step e) comprises:

e1) decompressing predetermined parts of the stored compressed divided image portions;

e2) combining the decompressed predetermined parts; and

e3) compressing the combined parts to provide the synthesized compressed entire image.

10. The method of image synthesis of claim 9, wherein said step e2) comprises aligning the decompressed predetermined parts based on the extracted synthesizing information prior to combining the decompressed predetermined parts.

11. The method of image synthesis of claim 8, wherein said step b) comprises extracting motion vectors derived from adjacent ones of the plurality of divided image portions.

12. A camera comprising:

imaging means for imaging an object and providing a plurality of divided image portions of the object;

extraction means for extracting synthesizing information from the divided image portions;

compression means for compressing the divided image portions;

appending means for adding the extracted synthesizing information to each of the plurality of divided image portions; and

output means for outputting each of the plurality of divided image portions having synthesizing information added thereto.