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Title:
SHADING CORRECTION DEVICE FOR MEDICAL DIAGNOSIS
Document Type and Number:
Japanese Patent JPH078474
Kind Code:
A
Abstract:

PURPOSE: To correct the influence of shading generating the direct irradiation field peak by comparatively processing the peak by performing the histogram calculation for each picture area of divided picture information and obtaining the direct irradiation field.

CONSTITUTION: The picture data for medical diagnosis is stored in a picture memory 10 and divided right and left by a right-and-left division part 11 and inputted to a histogram calculation part 12 for each area. Then, a peak value P1 of the direct irradiation field of one area obtained by the histogram calculation is stored in a register 13 and a peak value P2 of the direct irradiation field of the other area is stored in a register 14. A direct irradiation field peak break detecting device 15 accepts the output of the histogram calculation part 12 and detects whether or not the peak break is in the direct irradiation field and inputs the output to a control part 16. The peak values Pi and P2 from the registers 13 and 14 and a control command from the control part 16 are inputted to a shading correction part 17. The picture stored in the picture memory 10 is read out to perform the shading correction.


Inventors:
Matsumura, Shigeru
Application Number:
JP1993000143471
Publication Date:
January 13, 1995
Filing Date:
June 15, 1993
Export Citation:
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Assignee:
GE YOKOGAWA MEDICAL SYST LTD
International Classes:
A61B6/00; H04N5/325; (IPC1-7): A61B6/00; H04N5/325
Attorney, Agent or Firm:
井島 藤治 (外1名)



 
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