Method for Evaluating Performance of Wipers Based on Visibility

Takashi KITAYAMA  Mikiko KAWASUMI  Hatsuo YAMASAKI  Tomoaki NAKANO  Shin YAMAMOTO  Muneo YAMADA  Yuta DOI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E95-C   No.11   pp.1716-1723
Publication Date: 2012/11/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E95.C.1716
Print ISSN: 0916-8516
Type of Manuscript: INVITED PAPER (Special Section on Electronic Displays)
Category: 
Keyword: 
wiper,  visibility,  wiping performance,  frequency analysis,  contrast,  

Full Text: FreePDF


Summary: 
There is no clear criterion yet for evaluating wipers based on performances of wiping raindrops and visibility in forward view. In the visibility evaluation in rainy driving, it is important to examine spatial frequency and contrast of objects in forward view. Spatial frequency and contrast of image which were affected by raindrops are calculated based on them of background board which were printed stripe patterns. Variations with time of power of analysed frequency and decreased contrast are synchronized with motion of the wiper for the all experimental cases. Moreover, we executed questionnaire, and evaluated the view of the background board. These results show that the proposed methods have been validated in evaluation with wiping performance.