A Fast Adaptive Binarization Method for QR Code Images Based on Dynamic Illumination Equalization DOI Open Access
Rongjun Chen, Yue Huang,

Kailin Lan

и другие.

Electronics, Год журнала: 2023, Номер 12(19), С. 4134 - 4134

Опубликована: Окт. 4, 2023

The advancement of Internet Things (IoT) has enhanced the extensive usage QR code images in various computer vision applications. Nonetheless, this also brought forth several technical challenges. In particular, logistics sorting system often encounters issues such as a low recognition rate and slow processing speed when dealing with under complex lighting conditions like uneven illumination. To address these difficulties, method that focuses on achieving fast adaptive binarization through dynamic illumination equalization was proposed. First, an algorithm based edge enhancement to obtain position detection patterns within applied, which enabled acquisition structural features Subsequently, can achieve equalization. As for validation, experiments were performed two datasets include influenced by strong light, weak different shadow degrees. results disclosed benefits proposed compared previous approaches; it produced superior rates 78.26–98.75% cases commonly used decoders (Wechat Zxing), faster 0.0164 s/image, making proper satisfy real-time requirements practical applications, system.

Язык: Английский

Fabrication of Printable Colorimetric Food Sensor Based on Hydrogel for Low-Concentration Detection of Ammonia DOI Creative Commons
Mirim Ham, Soohyun Kim, Wonmok Lee

и другие.

Biosensors, Год журнала: 2022, Номер 13(1), С. 18 - 18

Опубликована: Дек. 23, 2022

With the increasing market share of ready-to-cook foods, accurate determination food freshness and thus safety has emerged as a concern. To commercialize popularize sensing technologies, sensors with diverse functionalities, low cost, facile use must be developed. This paper proposes printable based on hydrogel-containing pH indicator to detect ammonia gas. The were composed biocompatible polymers such 2-hydroxyethyl methacrylate (HEMA) [2-(methacryloyloxy)ethyl] trimethylammonium chloride (MAETC). p(HEMA-MAETC) hydrogel sensor bromothymol blue (BTB) demonstrated visible color change function concentration during spoilage. Furthermore, polyacrylonitrile (PAN) was added improve transport speed ammonium ions matrix in optimized viscosity enable successful printing. changed within 3 min at 300 ppb 1 ppm, respectively. exhibited reproducibility over 10 cycles selective exposure various gases generated spoilage process. In an experiment involving pork spoilage, significant before after gas 8 h ambient conditions. proposed can integrated bar codes QR that are easily mass produced.

Язык: Английский

Процитировано

8

A QR code-integrated chromogenic paper strip for detection of hydrogen peroxide in aqueous samples DOI

Pawankumar Rai,

Suryansh Verma,

Srishti Mehrotra

и другие.

Analytical Methods, Год журнала: 2023, Номер 15(40), С. 5286 - 5293

Опубликована: Янв. 1, 2023

Hydrogen peroxide (H2O2) is commonly used as a preservative, disinfectant, bleach, and oxidizing agent. The prolonged consumption of H2O2 adulterated milk harmful to human health when consumed in the diet. Exposure can lead oxidative stress, cell damage tissue injury. Due potential adverse effects, use hydrogen regulated certain applications, such food, water treatment plants medical products. Several methods are available for detection various matrices. Here, method QR code-integrated chromogenic paper strip aqueous samples has been developed. spectrophotometric showed an LOD LOQ 0.00087 ± 8.70 ×10-5% (v/v) 0.0037 0.0003% (v/v), respectively. paper-based prepared by immobilizing recognition solution onto code was able detect 0.0005% v/v samples. integrated sensors serve useful tool consumers, regulatory agencies, food industry assess quality authenticity.

Язык: Английский

Процитировано

4

The Application of Back-Compatible Color QR Codes to Colorimetric Sensors DOI Creative Commons
Ismael Benito-Altamirano, Ferran Crugeira, Míriam Marchena

и другие.

Опубликована: Март 13, 2024

We present the application of QR Codes as carriers for colorimetric dyes, whereby this refined version machine-readable patterns applied to sensing also allows us maintain data from Code standard in a back-compatible way, which means that is still able encode digital (readable with decoder) alongside hundred references and dyes. Also, we discuss detail effectiveness different color correction methods attaining accuracy levels suited via colorimetry. Moreover, illustrate how techniques can be take advantage having hundreds references, an exemplary case CO2 printed sensor used monitor integrity modified atmosphere packaging (MAP).

Язык: Английский

Процитировано

1

Colorimetric Quick Response (QR) Tags and Other Time-Temperature Indicators (TTIs) for Remote Quality Assessment: Theoretical Kinetics Aspects DOI
Micha Peleg, I. Sam Saguy

Food Engineering Reviews, Год журнала: 2024, Номер 16(3), С. 356 - 370

Опубликована: Апрель 26, 2024

Язык: Английский

Процитировано

1

A Fast Adaptive Binarization Method for QR Code Images Based on Dynamic Illumination Equalization DOI Open Access
Rongjun Chen, Yue Huang,

Kailin Lan

и другие.

Electronics, Год журнала: 2023, Номер 12(19), С. 4134 - 4134

Опубликована: Окт. 4, 2023

The advancement of Internet Things (IoT) has enhanced the extensive usage QR code images in various computer vision applications. Nonetheless, this also brought forth several technical challenges. In particular, logistics sorting system often encounters issues such as a low recognition rate and slow processing speed when dealing with under complex lighting conditions like uneven illumination. To address these difficulties, method that focuses on achieving fast adaptive binarization through dynamic illumination equalization was proposed. First, an algorithm based edge enhancement to obtain position detection patterns within applied, which enabled acquisition structural features Subsequently, can achieve equalization. As for validation, experiments were performed two datasets include influenced by strong light, weak different shadow degrees. results disclosed benefits proposed compared previous approaches; it produced superior rates 78.26–98.75% cases commonly used decoders (Wechat Zxing), faster 0.0164 s/image, making proper satisfy real-time requirements practical applications, system.

Язык: Английский

Процитировано

3