Software Implementation of the Algorithm for Recognizing Protective Elements on The Face

The quarantine restrictions introduced during COVID-19 are necessary to minimize the spread of coronavirus disease. These measures include a fixed number of people in the room, social distance, wearing protective equipment. These restrictions are achieved by the work of technological control workers and the police. However, people are not ideal creatures, quite often the human factor makes its adjustments. That is why in this work we have developed software for determining the protective elements on the face in real time using the Python scripting language, the open software libraries OpenCV v4.5.4, TensorFlow v2.6.0, Keras v2.6.0 and MobileNetV2 using the camera. The training program uses a prepared set of photos from KAGGLE — with a mask and without a mask. This set has been expanded by the authors to include different types of masks and their location. Using TensorFlow, Keras, MobileNetV2, a model is created to study the neural network by analyzing images. The generated neural network uses a model to determine the masks. You can preview the learning result of the network — it is presented as a graphic file. A program that uses the connected camera is then launched and the user can test the operation. This model can be easily deployed on embedded systems such as Raspberry Pi, Google Coral, and become a hardware and software automated system that can be used in crowded places — airports, shopping malls, stadiums, government agencies and more.

Method for hiding text data in an image

The main problem: The article deals with the issues of hiding text information in a graphic file. A formula for hiding text information in image pixels is proposed. A steganography scheme for embedding secret text in random image pixels has been developed. Random bytes are pre-embedded in each row of pixels in the source image. As a result of the operations performed, a key image is obtained. The text codes are embedded in random bytes of pixels of a given RGB channel. To form a secret message, the characters of the ASCII code table are used. Demo encryption and decryption programs have been developed in the Python 3.5.2 programming language. A graphic file is used as the decryption key. Purpose: To develop an algorithm for embedding text information in random pixels of an image. Methods: Among the methods of hiding information in graphic images, the LSB method of hiding information is widely used, in which the lower bits in the image bytes responsible for color encoding are replaced by the bits of the secret message. Analysis of methods of hiding information in graphic files and modeling of algorithms showed an increase in the level of protection of hidden information from detection. Results and their significance: Using the proposed steganography scheme and the algorithm for embedding bytes of a secret message in a graphic file, protection against detection of hidden information is significantly increased. The advantage of this steganography scheme is that for decryption, a key image is used, in which random bytes are pre-embedded. In addition, the entire pixel bits of the container image are used to display the color shades. It can also be noted that the developed steganography scheme allows not only to transmit secret information, but also to add digital fingerprints or hidden tags to the image.

Principles of Document Design

This publication on the principles of document design is the second of a five-part series on document design. This series also covers the document design process, elements of document design, graphic file formats, and brochure and newsletter design. Updates previous version: Telg, Ricky. 2012. “Principles of Document Design”. EDIS 2012 (7). https://journals.flvc.org/edis/article/view/119919.

Graphic File Formats

This publication on graphic file formats is the fourth of a five-part series on document design. This series also covers the document design process, principles of document design, elements of document design, and brochure and newsletter design. Previous version: Telg, Ricky. 2012. “Graphic File Formats”. EDIS 2012 (7). https://journals.flvc.org/edis/article/view/119921.

Brochures and Newsletters

This publication on brochure and newsletter design is the fifth of a five-part series on document design. This series also covers the document design process, principles of document design, elements of document design, and graphic file formats. Updated from previous version: Telg, Ricky. 2012. “Brochures and Newsletters”. EDIS 2012 (7). https://journals.flvc.org/edis/article/view/119922.

Elements of Document Design

This publication on the elements document design is the third of a five-part series on document design. This series also covers the document design process, principles of document design, graphic file formats, and brochure and newsletter design. Updates previous version: Telg, Ricky. 2012. “Elements of Document Design.” EDIS 2012 (7). https://journals.flvc.org/edis/article/view/119920.

Document Design

This publication on the document design process is the first of a five-part series on document design. This series also covers principles of document design, elements of document design, graphic file formats, and brochure and newsletter design. Updates previous version: Telg, Ricky. 2012. “Document Design”. EDIS 2012 (7). https://journals.flvc.org/edis/article/view/119918.

Graphic File Formats for Web Virtual Globe

In this paper various graphic formats were reviewed as resources for web virtual globe. Interactive spherical visualization (ISV) platform called “Orbus” was considered as an example of a graphic resources repository for web virtual globe. Various raster and vector static and dynamic cartographic layers can be set as resources of applications of this type. Such data should fulfill requirements for high informativeness with a minimum disk volume. In this paper traditional formats used for geodata storing, as well as becoming popular formats that can be adapted to work with geodata were explored. As a result of the analysis of the characteristics of common raster formats, the optimized raster format WebP (in the lossless specification), as well as the associated WebM media container, were selected as the most efficient. As a result of analysis of the characteristics of common vector formats, conclusions about their limitations in visual design of the virtual globe were made.

Some Aspects of a Client-Server Architecture System for Processing Radar Images

This article discusses some aspects of a client-server architecture system designed to process radar images. It is assumed that data obtained remotely are processed to determine oil pollution on the water surface. The synthesis of monochrome images and the infological model of the system are considered. The developed application provides the ability to preview the image, forming a graphic file from satellite data; implements functions that allow you to annotate images, marking areas of interest and adding comments; implements, if necessary, an algorithm for merging monochrome images; implements a keyword support system that allows flexible categorization of all images; provides the necessary level of information security through the separation of user rights and authorization systems. The developed software product allows access to files stored in the GIS database archive in real time simultaneously by a large number of users, i.e. represents its network (web) application. The software product contains three levels: a user interface on a client browser, a web application, and a database server.

Potential of image optimization on websites of rural tourism facilities in Poland

The success of a rural tourism business largely depends on promotional activities. Having developed a tourist product, owners of rural tourism facilities should therefore inform the buyers about it. Usually, they rely on websites and social media for this purpose. However, for a website to fulfill its function, it should be of high quality. The improvement of website quality can be achieved through measures which include search engine optimization (SEO) and content and graphics optimization. The purpose of this paper is to assess the potential of image optimization on websites of Polish rural tourism facilities. The research covered 1000 paid domain websites. The largest part of the sites surveyed were rated good in terms of graphic file optimization. In spite of this, it was possible to reduce the size of graphic files covered by this study and used in the research model by as much as 67% without significantly deteriorating their quality. This research showed that image optimization has no direct impact on the outcome of an SEO audit, and that images can be optimized even for websites with high final scores.