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Paper Abstract and Keywords
Presentation 2023-03-02 14:40
QR code image dnoising netwroks based on decodability assessment
Kazumitsu Takahashi, Makoto Nakashizuka (CIT) SIS2022-46
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, an image denoising method for QR code images is proposed. The image recovery from the degraded QR code image is performed to improve the successful rate of the data decoding from the QR code images. In many image recovery algorithms, which include image denoising, the objective of the algorithm is to decrease the mean square error between the clean image and the recovered image. However, the decrement of the mean square error is not related to improve the decoding rate directly. There exist any possible metric of the recovery that can improve the decoding rate. In this paper, the CNN (convolutional neural network) is applied to decodability assessment of the QR code and the trained network is employed to train the denosing network that improve the decoding rate of QR codes. In the proposed method, the CNN is trained to predict success or fail of decoding of the existing QR code decoder. The output of this CNN is defined as the decodability. Then, the denosing CNN is trained to minimize the loss function that consists of this decodability and the fidelity of the output image. In experiments, the decodability assessment of the CNN is demonstrated. We show that the decoding rate obtained from the denoising neural network that is trained with the decodability is superior to the denoising neural network trained with only mean square error.
Keyword (in Japanese) (See Japanese page) 
(in English) convolutional neural network / denoising / QR code / image recovery / decode / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 410, SIS2022-46, pp. 33-36, March 2023.
Paper # SIS2022-46 
Date of Issue 2023-02-23 (SIS) 
ISSN Online edition: ISSN 2432-6380
Copyright
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reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee SIS  
Conference Date 2023-03-02 - 2023-03-03 
Place (in Japanese) (See Japanese page) 
Place (in English) Chiba Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIS 
Conference Code 2023-03-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) QR code image dnoising netwroks based on decodability assessment 
Sub Title (in English)  
Keyword(1) convolutional neural network  
Keyword(2) denoising  
Keyword(3) QR code  
Keyword(4) image recovery  
Keyword(5) decode  
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1st Author's Name Kazumitsu Takahashi  
1st Author's Affiliation Chiba Institute of Technology (CIT)
2nd Author's Name Makoto Nakashizuka  
2nd Author's Affiliation Chiba Institute of Technology (CIT)
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Speaker Author-1 
Date Time 2023-03-02 14:40:00 
Presentation Time 20 minutes 
Registration for SIS 
Paper # SIS2022-46 
Volume (vol) vol.122 
Number (no) no.410 
Page pp.33-36 
#Pages
Date of Issue 2023-02-23 (SIS) 


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