Image processing method and apparatus for acquiring higher resolution image data for a region of interest from a data stream

• US 7,570,790 B2
• Filed: 06/03/2005
• Issued: 08/04/2009
• Est. Priority Date: 04/27/2001
• Status: Expired due to Fees

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tsujii, Osamu, Sato, Makoto
• Primary Examiner(s): KIM, CHONG R
• Application Number:
  US11/143,714
• Publication Number:
  US 20050213802A1
• Time in Patent Office: 1,523 Days
• Field of Search: None
• US Class Current: 382/128
• CPC Class Codes: G06T 7/0012 Biomedical image inspection

Abstract

An apparatus having image processing function performs image processing method. In the image processing method, a first portion of data is acquired as a data stream obtained from image data that has been sequentially converted and encoded, then the acquired data is decoded to obtain a two-dimensional image. The two-dimensional image is analyzed to determine a region of interest within the two-dimensional image. Then, a second portion of data is acquired as a data stream obtained from the image data based on the region of interest. Thus, areas that are useful to the diagnosis can be displayed promptly and in detail.

Claims

1. An apparatus having an image processing function, comprising:

first acquisition means for acquiring, from a data server, a first portion of data as a data stream obtained from image data that has been sequentially converted and encoded;

decoding means for decoding the data acquired by said first acquisition means and obtaining a two-dimensional image;

analysis means for analyzing the two-dimensional image obtained by said decoding means by providing a medical diagnostic support and determining a region of interest within the two-dimensional image; and

second acquisition means for acquiring, from the data server, a second portion of data as a data stream obtained from the image data based on the region of interest determined by said analysis means,

wherein a degree of resolution of the image data acquired by said first acquisition means is lower than that of an original image and its spatial resolution and density resolution are determined based on a type of diagnosis,

wherein a degree of resolution of the image data acquired by said second acquisition means is higher than that of the image data acquired by said first acquisition means,

wherein said second acquisition means specifies a tile region or a code block for the region of interest, and instructs the data server to expedite transfer of the data stream of the specified tile region or code block, and

wherein the region of interest is a region deemed to be tested positive based on results of the medical diagnostic support provided by said analysis means.

2. The apparatus according to claim 1, wherein the data stream of the first portion acquired by the first acquisition means corresponds to image quality capable of executing an analysis by said analysis means.

3. The apparatus according to claim 1, further comprising setting means for setting a data volume of the first portion acquired by said first acquisition means according to a diagnostic purpose.

4. The apparatus according to claim 1, wherein said second acquisition means acquires a data stream that expresses details of the two-dimensional image corresponding to the region of interest output by said analysis means.

5. The apparatus according to claim 4, wherein said second acquisition means requests an apparatus that provides the data stream to provide the data stream that expresses the details of the two-dimensional image corresponding to the region of interest output by said analysis means.

6. The apparatus according to claim 1, wherein said second acquisition means acquires a data stream so that an image quality of a region corresponding to the region of interest becomes better than an image quality obtained by the data stream acquired by said first acquisition means.

7. The apparatus according to claim 1, further comprising display means for displaying the two-dimensional image decoded by said decoding means and displaying the region of interest determined by said analysis means.

8. The apparatus according to claim 1, further comprising display means for displaying a two-dimensional image of the data decoded by said decoding means, and displaying the region of interest determined by said analysis means on the two-dimensional image.

9. A method of image processing, comprising:

using a processor to perform the steps of;

a first acquisition step of acquiring, from a data server, a first portion of data as a data stream obtained from image data that has been sequentially converted and encoded, the image data representing an X-ray image;

a decoding step of decoding the data acquired in the first acquisition step and obtaining a two-dimensional image;

an analysis step of analyzing the two-dimensional image obtained in the decoding step by providing a medical diagnostic support and determining a region of interest within the two-dimensional image; and

a second acquisition step of acquiring, from the data server, a second portion of data as a data stream obtained from the image data based on the region of interest determined in the analysis step,

wherein a degree of resolution of the image data acquired by said first acquisition step is lower than that of an original image and its spatial resolution and density resolution are determined based on a type of diagnosis,

wherein a degree of resolution of the image data acquired by said second acquisition step is higher than that of the image data acquired by said first acquisition step, wherein said second acquisition step specifies a tile region or a code block for the region of interest, and instructs the data server to expedite transfer of the data stream of the specified tile region or code block, and

wherein the region of interest is a region deemed to be tested positive based on results of the medical diagnostic support provided by said analysis step.

10. The method according to claim 9, wherein the data stream of the first portion acquired in the first acquisition step corresponds to image quality capable of executing an analysis by the analysis step.

11. The method according to claim 9, further comprising a setting step of setting a data volume of the first portion acquired in the first acquisition step according to a diagnostic objective.

12. The method according to claim 9, wherein the second acquisition step acquires a data stream that expresses details of the two-dimensional image corresponding to the region of interest output by the analysis step.

13. The method according to claim 12, wherein the second acquisition step requests an apparatus that provides the data stream to provide the data stream that expresses the details of the two-dimensional image corresponding to the region of interest output by the analysis step.

14. The method according to claim 9, wherein the second acquisition step acquires a data stream so that an image quality of a region corresponding to the region of interest is better than an image quality obtained by the data stream acquired in the first acquisition step.

15. The image processing method according to claim 9, further comprising a display step of displaying the two-dimensional image decoded in the decoding step and the region of interest determined in the analysis step.

16. A program, embodied in a computer-readable medium, that causes a computer to execute an image processing method, the image processing method comprising:

a first acquisition step of acquiring, from a data server, a first portion of data as a data stream obtained from image data that has been sequenced, converted and encoded;

a decoding step of decoding the data acquired in the first acquisition step and obtaining a two-dimensional image;

an analysis step of analyzing the two-dimensional image obtained in the decoding step by providing a medical diagnostic support and determining a region of interest within the two-dimensional image; and

a second acquisition step of acquiring, from the data server, a second portion of data as a data stream obtained from the image data based on the region of interest determined in the analysis step,

wherein a degree of resolution of the image data acquired by said first acquisition step is lower than that of an original image and its spatial resolution and density resolution are determined based on a type of diagnosis,

wherein a degree of resolution of the image data acquired by said second acquisition step is higher than that of the image data acquired by said first acquisition step,

wherein said second acquisition step specifies a tile region or a code block for the region of interest, and instructs the data server to expedite transfer of the data stream of the specified tile region or code block, and

wherein the region of interest is a region deemed to be tested positive based on results of the medical diagnostic support provided by said analysis step.

17. A computer readable recording medium containing a program that causes a computer to execute an image processing method, the image processing method comprising:

a first acquisition step of acquiring, from a data server, a first portion of data as a data stream obtained from image data that has been sequentially converted and encoded;

a decoding step of decoding the data acquired in the first acquisition step and obtaining a two-dimensional image;

an analysis step of analyzing the two-dimensional image obtained in the decoding step by providing a medical diagnostic support and determining a region of interest within the two-dimensional image; and

a second acquisition step of acquiring, from the data server, a second portion of data as a data stream obtained from the image data based on the region of interest determined in the analysis step,

wherein a degree of resolution of the image data acquired by said first acquisition step is lower than that of an original image and its spatial resolution and density resolution are determined based on a type of diagnosis,

wherein a degree of resolution of the image data acquired by said second acquisition step is higher than that of the image data acquired by said first acquisition step,

wherein said second acquisition step specifies a tile region or a code block for the region of interest, and instructs the data server to expedite transfer of the data stream of the specified tile region or code block, and

wherein the region of interest is a region deemed to be tested positive based on results of the medical diagnostic support provided by said analysis step.

18. A computer into which a computer-readable recording medium is inserted containing a program that causes the computer to execute an image processing method, the image processing method comprising:

using the computer to perform the steps of

a first acquisition step of acquiring, from a data server, a first portion of data as a data stream obtained from image data that has been sequentially converted and encoded;

a decoding step of decoding the data acquired in the first acquisition step and obtaining a two-dimensional image;

an analysis step for analyzing the two-dimensional image obtained in the decoding step providing a medical diagnostic support and determining a region of interest within the two-dimensional image; and

a second acquisition step for acquiring, from the data server, a second portion of data as a data stream obtained from the image data based on the region of interest determined in the analysis step,

wherein a degree of resolution of the image data acquired by said first acquisition step is lower than that of an original image and its spatial resolution and density resolution are determined based on a type of diagnosis,

wherein a degree of resolution of the image data acquired by said second acquisition step is higher than that of the image data acquired by said first acquisition step, wherein said second acquisition step specifies a tile region or a code block for the region of interest, and instructs the data server to expedite transfer of the data stream of the specified tile region or code block, and

wherein the region of interest is a region deemed to be tested positive based on results of the medical diagnostic support provided by said analysis step.