Title:
画面の動画質評価方法
Document Type and Number:
Japanese Patent JP4286068
Kind Code:
B2
Abstract:
A test pattern is moved on a screen 5 subject to measurement with the field of view of an image sensor pursuing the motion of the test pattern so as to observe BEW. Subsequently, the field of view 33 of the image sensor is moved at the same velocity vc as in the foregoing observation to capture an image of a static pattern PE, and a blur width W along the scrolling direction that appears in a distribution profile of the captured image is observed. Based upon the blur width W and the exposure time of the image sensor for capturing the image of the static pattern PE, the moving velocity of the test pattern at the time of observation of the BEW is estimated, and by using the moving velocity, the BEW is normalized. Evaluation of the moving image quality of the screen is carried out by using the normalized N BEW. The moving velocity of the original test pattern can thus be estimated easily and accurately, and accordingly, the moving image quality of the screen can be evaluated accurately.
Inventors:
Koichi Oka
Gangnam Seishi
Gangnam Seishi
Application Number:
JP2003158213A
Publication Date:
June 24, 2009
Filing Date:
June 03, 2003
Export Citation:
Assignee:
Otsuka Electronics Co., Ltd.
International Classes:
H04N17/04; G06T1/00; G09G3/00; G09G5/34
Domestic Patent References:
| JP200154147A | ||||
| JP2001204049A | ||||
| JP2002291001A |
Foreign References:
| WO2004075567A1 |
Attorney, Agent or Firm:
Inaoka cultivation
Mio Kawasaki
Mio Kawasaki