scholarly journals Annotation of the medical images using quick response codes

2017 ◽  
Vol 14 (1) ◽  
pp. 175-196 ◽  
Author(s):  
Girūta Kazakevicūtė-Januskevicienė ◽  
Andrius Usinskas ◽  
Eugenijus Januskevicius ◽  
Jurgita Usinskienė ◽  
Simona Letautienė
Keyword(s):  
Average Length ◽  
Two Dimensional ◽  
Quick Response ◽  
Jpeg 2000 ◽  
Qr Codes ◽  
Information Preservation ◽  
Industrial Grade ◽  
On Line ◽  
Information Detection ◽  
Acceptable Image Quality

The article proposes a novel annotating method of sufficient capacity and intended not only on-line but for off-line using for information preservation all advantages of two-dimensional barcodes. The semantic annotations are embedded directly into the reasonably chosen area of the image and bound by spatial identifiers with corresponding regions. The embedding method deals with the different quality requirements of the regions. Two-dimensional QR codes are used as the physical carrier of the annotation, providing the industrial grade for information detection, resilience and error correction capabilities. The annotation is distributed in a series of QR codes for efficient use of the available space. The results reveal that the spatial domain based technique is faster and has higher data embedding capacity than JPEG 2000 based. The amount of embedded information preserving the acceptable image quality in both proposed embedding cases is higher the average length of the presented original descriptions.

scholarly journals Animated Two-Dimensional Barcode Generation Using Optimization Algorithms – Redesign of Formulation, Operator, and Quality Evaluation

2009 ◽  
Vol 13 (3) ◽  
pp. 245-254 ◽  
Author(s):  
Satoshi Ono ◽  
◽  
Kensuke Morinaga ◽  
Shigeru Nakayama
Keyword(s):  
Code Generation ◽  
Optimization Problem ◽  
Quality Evaluation ◽  
Qr Code ◽  
Two Dimensional ◽  
Quick Response ◽  
Qr Codes ◽  
Running Head ◽  
Generation Problem ◽  
Font Color

To improve on our previously proposed but problem-plagued innovation for generating animated and illustrated Quick Response (QR) codes, this paper proposes a method which formulates the animated QR code generation problem as an optimization problem rather than as a set of still QR code decoration problems. The proposed method also uses optimization operators designed for this problem and quality evaluation to maintain natural, smooth movement. Experiments demonstrate that the proposed method can generate animated QR codes involve a maximum of eight illustrations moving inside the code which maintaining decoding feasibility and smooth illustration movement.<FONT color="red" size="3">Erratum<br /></FONT> <FONT color="red" size="2">Due to a wrong manipulation during the correction of the proofs of the above paper, the running head title (short title) was incorrect. The correct running head title should have read as "Animated Two–Dimensional Barcode Generation."</FONT>

scholarly journals Recognition of Perspective Distorted QR Codes with a Partially Damaged Finder Pattern in Real Scene Images

2020 ◽  
Vol 10 (21) ◽  
pp. 7814
Author(s):  
Ladislav Karrach ◽  
Elena Pivarčiová ◽  
Pavol Bozek
Keyword(s):  
Mobile Robots ◽  
Qr Code ◽  
Two Dimensional ◽  
Quick Response ◽  
Image Binarization ◽  
Computationally Efficient ◽  
Qr Codes ◽  
Operational Space ◽  
Perspective Distortion ◽  
Real Scene

QR (Quick Response) codes are one of the most famous types of two-dimensional (2D) matrix barcodes, which are the descendants of well-known 1D barcodes. The mobile robots which move in certain operational space can use information and landmarks from environment for navigation and such information may be provided by QR Codes. We have proposed algorithm, which localizes a QR Code in an image in a few sequential steps. We start with image binarization, then we continue with QR Code localization, where we utilize characteristic Finder Patterns, which are located in three corners of a QR Code, and finally we identify perspective distortion. The presented algorithm is able to deal with a damaged Finder Pattern, works well for low-resolution images and is computationally efficient.

The Sky Is the Limit!

2018 ◽  
pp. 101-121
Author(s):  
George Drivas ◽  
Chryssanthe Sotiriou ◽  
Helen Bonanou ◽  
Sofia Saliari ◽  
Michelle Balafouti ◽  
...  
Keyword(s):  
Teaching And Learning ◽  
Physical World ◽  
Theoretical Background ◽  
Digital Information ◽  
Two Dimensional ◽  
Technology Access ◽  
Qr Codes ◽  
On Line ◽  
Online Quizzes ◽  
Mind Maps

Technology and particularly Cloud technology can definitely prove to be a powerful tool in linking the physical to the virtual world by allowing an escape and freedom from the two-dimensional world of paper-based teaching and learning. Balance is therefore achieved while educators and students access and create digital information on top of the physical world. Technology is everybody's favorite thus educators should definitely consider integrating them in their teaching in order to increase motivation. In the era of technology, access to on-line information is at the end of learners' and educators' fingertips. Simple but appealing electronic tools like mind maps, blogs, online quizzes or games, QR codes, digital educational platforms and infographics can boost inspiration, promote collaborative learning and make engagement more effective. This chapter will provide a theoretical background and showcase projects that exemplify the aspects highlighted here, each one from a different perspective.

Application of on-line two-dimensional liquid chromatography in comparative proteome analysis of antlers with different growing stages

2010 ◽  
Vol 28 (2) ◽  
pp. 146-151 ◽  
Author(s):  
Liang GAO ◽  
Xiaoqiang QIAO ◽  
Zhen LIANG ◽  
Lihua ZHANG ◽  
Yushu HUO ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Proteome Analysis ◽  
Two Dimensional ◽  
On Line

scholarly journals ART-UP: A Novel Method for Generating Scanning-Robust Aesthetic QR Codes

2021 ◽  
Vol 17 (1) ◽  
pp. 1-23
Author(s):  
Mingliang Xu ◽  
Qingfeng Li ◽  
Jianwei Niu ◽  
Hao Su ◽  
Xiting Liu ◽  
...  
Keyword(s):  
State Of The Art ◽  
Visual Quality ◽  
Qr Code ◽  
Quick Response ◽  
Estimation Model ◽  
Qr Codes ◽  
Excellent Performance ◽  
Novel Method ◽  
Coarse To Fine

Quick response (QR) codes are usually scanned in different environments, so they must be robust to variations in illumination, scale, coverage, and camera angles. Aesthetic QR codes improve the visual quality, but subtle changes in their appearance may cause scanning failure. In this article, a new method to generate scanning-robust aesthetic QR codes is proposed, which is based on a module-based scanning probability estimation model that can effectively balance the tradeoff between visual quality and scanning robustness. Our method locally adjusts the luminance of each module by estimating the probability of successful sampling. The approach adopts the hierarchical, coarse-to-fine strategy to enhance the visual quality of aesthetic QR codes, which sequentially generate the following three codes: a binary aesthetic QR code, a grayscale aesthetic QR code, and the final color aesthetic QR code. Our approach also can be used to create QR codes with different visual styles by adjusting some initialization parameters. User surveys and decoding experiments were adopted for evaluating our method compared with state-of-the-art algorithms, which indicates that the proposed approach has excellent performance in terms of both visual quality and scanning robustness.

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