MEDICAL IMAGE RECORDING DEVICE

• US 20160112680A1
• Filed: 04/16/2014
• Published: 04/21/2016
• Est. Priority Date: 05/20/2013
• Status: Active Grant

• Current Assignee: Acp Japan Co., Ltd., Shoichi Nakamura
• Original Assignee: Acp Japan Co., Ltd., Shoichi Nakamura
• Inventors: NAKAMURA, Shoichi
• Granted Patent: US 10,057,547 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation
• CPC Class Codes: G03B 15/14 for taking photographs during medical operations
• CPC Class Codes: G03B 17/48 adapted for combination with other photographic or optical apparatus
• CPC Class Codes: G03B 2217/005 Blur detection
• CPC Class Codes: G03B 29/00 Combinations of cameras, projectors or photographic printing apparatus with non-photographic non-optical apparatus, e.g. clocks or weapons; Cameras having the shape of other objects combinations with flash apparatus G03B15/03
• CPC Class Codes: G03B 5/00 Adjustment of optical system relative to image or object surface other than for focusing
• CPC Class Codes: H04N 23/6811 based on the image signal
• CPC Class Codes: H04N 23/6812 based on additional sensors, e.g. acceleration sensors
• CPC Class Codes: H04N 23/685 performed by mechanical compensation
• CPC Class Codes: H04N 23/74 by influencing the scene brightness using illuminating means
• CPC Class Codes: H04N 5/145 Movement estimation for video coding H04N19/51
• CPC Class Codes: H04N 5/77 between a recording apparatus and a television camera
• CPC Class Codes: H04N 7/183 for receiving images from a single remote source
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal

Abstract

A medical image recording device includes an image pickup device generating an image pickup signal by photoelectric ally converting light reflected from a subject with use of an image pickup element, wherein an image pickup control unit displays, on a display unit, image data generated for each of frames constituting a video by processing the image pickup signal. A recording control unit records the image data on a memory card. A movement detection unit sequentially compares the image data between the adjacent frames, and calculates an amount of movement of the image pickup device from a positional shift of a main subject between the adjacent frames. If the amount of movement is within a preset range, a camera shake correction unit corrects a blur. If the amount of movement is greater than an upper limit of the range, the recording control unit stops recording of image data on the memory card.

Claims

1. A medical image recording device that shoots by putting, on a body of an operator conducting medical treatment, an image pickup device that includes at least an optical lens and an image pickup element which generates an image pickup signal by photoelectrically converting light introduced from a subject via the optical lens during shooting, the medical image recording device comprising:

an image pickup control unit that controls in such a way as to display, on a display unit, a video from image data that is generated for each of frames that constitute the video based on the image pickup signal;

an information recording unit that sequentially records the image data;

a movement detection unit that sequentially compares the image data between consecutive or adjacent frames, and calculates an amount of movement of the image pickup device based on a positional shift of a main subject between the frames;

a camera shake correction unit that corrects, when the amount of movement is within a preset range, a positional shift of the video caused by the movement corresponding to the amount of movement; and

a recording control unit that controls stopping of the recording of the image data on the information recording unit when the amount of movement is greater than an upper limit of the range.

2. The medical image recording device according to claim 1, wherein

the image pickup control unit stops the displaying of the video when the amount of movement is greater than the upper limit of the range.

3. The medical image recording device according to claim 2, wherein

the image pickup control unit stops the displaying of the video after a predetermined time-lag period has passed since the movement detection unit detects that the amount of movement is greater than the upper limit of the range.

4. The medical image recording device according to claim 2, wherein

the image pickup control unit controls in such a way as to display, as a still image, the image data of the frame that appears immediately before the amount of movement exceeds the upper limit of the range, after the displaying of the video is stopped.

5. The medical image recording device according to claim 1, wherein

the recording control unit controls resumption of recording of the image data by the information recording unit after the amount of movement exceeds the upper limit of the range and after a main subject detected by the movement detection unit comes to resemble the main subject that appears immediately before the amount of movement exceeds the upper limit of the range.

6. The medical image recording device according to claim 2, wherein

the image pickup control unit controls resumption of displaying of the video after the amount of movement exceeds the upper limit of the range and after a main subject detected by the movement detection unit comes to resemble the main subject that appears immediately before the amount of movement exceeds the upper limit of the range.

7. The medical image recording device according to claim 1, comprising

an illumination unit that emits light to the subject, wherein, when the amount of movement is greater than the upper limit of the range, the illumination unit stops the emission of the light or lowers the illumination intensity.

8. The medical image recording device according to claim 7, wherein

the illumination unit stops the emission of the light or lowers the illumination intensity after a predetermined time-lag period has passed since the movement detection unit detects that the amount of movement exceeds the upper limit of the range.

9. The medical image recording device according to claim 7, wherein

the illumination unit resumes the emission of the light or increases the illumination intensity after the amount of movement exceeds the upper limit of the range and after a main subject detected by the movement detection unit comes to resemble the main subject that appears immediately before the amount of movement exceeds the upper limit of the range.

10. The medical image recording device according to claim 1, wherein

the camera shake correction unit generates, when the amount of movement is within the range, corrected image data by combining the image data of a plurality of consecutive or adjacent frames.

11. A medical image recording device that shoots by putting, on a body of an operator conducting medical treatment, an image pickup device that includes at least an optical lens and an image pickup element which generates an image pickup signal by photoelectrically converting light introduced from a subject via the optical lens during shooting, the medical image recording device comprising:

an image pickup control unit that controls in such a way as to display, on a display unit, a video from image data that is generated for each of frames that constitute the video based on the image pickup signal;

an information recording unit that sequentially records the image data;

an acceleration sensor that detects movement of the image pickup device;

a first movement detection unit that calculates an amount of movement of the image pickup device based a detection signal of the acceleration sensor;

a camera shake correction unit that controls in such a way as to cancel a blur in the video caused by the movement corresponding to the amount of movement calculated by the first movement detection unit;

a second movement detection unit that sequentially compares the image data between consecutive or adjacent frames, and calculates an amount of movement of the image pickup device from a positional shift of a main subject between the frames; and

a recording control unit that controls stopping of the recording of the image data when the amount of movement calculated by the second movement detection unit is greater than or equal to a preset threshold value.

12. The medical image recording device according to claim 11, wherein

the first movement detection unit takes into account in advance a period during which distortion attenuates in an edge portion of a detection signal of the acceleration sensor, in setting a delay time, and calculates the amount of movement after the delay time has passed.

13. The medical image recording device according to claim 11, wherein

the image pickup control unit stops, when the amount of movement calculated by the second movement detection unit is greater than or equal to the threshold value, the displaying of the video.

14. The medical image recording device according to claim 13, wherein

the image pickup control unit stops the displaying of the video after a predetermined time-lag period has passed since detecting that the amount of movement calculated by the second movement detection unit is greater than or equal to the threshold value.

15. The medical image recording device according to claim 13, wherein

the image pickup control unit displays, as a still image, the image data that appears immediately before the amount of movement calculated by the second movement detection unit becomes greater than or equal to the threshold value, after the displaying of the video is stopped.

16. The medical image recording device according to claim 11, wherein

the recording control unit controls resumption of recording of the image data by the information recording unit after the amount of movement calculated by the second movement detection unit becomes greater than or equal to the threshold value and after a main subject detected by the second movement detection unit comes to resemble the main subject that appears immediately before the amount of movement exceeds the threshold value.

17. The medical image recording device according to claim 13, wherein

the image pickup control unit controls resumption of displaying of the video after the amount of movement calculated by the second movement detection unit becomes greater than or equal to the threshold value and after a main subject detected by the second movement detection unit comes to resemble the main subject that appears immediately before the amount of movement exceeds the threshold value.

18. The medical image recording device according to claim 11, comprising

an illumination unit that emits light to the subject, wherein, when the amount of movement calculated by the second movement detection unit becomes greater than or equal to the threshold value, the illumination unit stops the emission of the light or lowers the illumination intensity.

19. The medical image recording device according to claim 18, wherein

the illumination unit resumes the emission of the light or increases the illumination intensity after the amount of movement calculated by the second movement detection unit exceeds the threshold value and after a main subject detected by the second movement detection unit comes to resemble the main subject that appears immediately before the amount of movement exceeds the threshold value.