Wyniki wyszukiwania - BazTech

1

Vision-based positioning of electric buses for assisted docking to charging stations

Nowak Tomasz, Nowicki Michał R., Skrzypczyński Piotr

International Journal of Applied Mathematics and Computer Science

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2022

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Vol. 32, no. 4

583--599

EN

We present a novel approach to vision-based localization of electric city buses for assisted docking to a charging station. The method assumes that the charging station is a known object, and employs a monocular camera system for positioning upon carefully selected point features detected on the charging station. While the pose is estimated using a geometric method and taking advantage of the known structure of the feature points, the detection of keypoints themselves and the initial recognition of the charging station are accomplished using neural network models. We propose two novel neural network architectures for the estimation of keypoints. Extensive experiments presented in the paper made it possible to select the MRHKN architecture as the one that outperforms state-of-the-art keypoint detectors in the task considered, and offers the best performance with respect to the estimated translation and rotation of the bus with a low-cost hardware setup and minimal passive markers on the charging station.

2

Pierwsza w Polsce ścieżka w koronach drzew

Wójtowicz P.

Geoinżynieria : drogi, mosty, tunele

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2017

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nr 4

66

PL

Na fali popularności „podniebnych” spacerów także w Polsce powstaje ścieżka w koronach drzew. Kładka dla pieszych, wraz z wieżą z widokiem na Beskid Sądecki, stanie w Krynicy-Zdrój, na terenie stacji narciarskiej Słotwiny Arena.

3

Dwa przykłady kładek typu landmark usytuowanych na obszarach miast

Prabucki P., Woźny P., Onysyk J., Biliszczuk J.

Geoinżynieria : drogi, mosty, tunele

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2014

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nr 1

62-63

PL

W miastach Europy, Azji i Ameryki od wielu lat powstają interesujące kładki dla pieszych, o nietypowym ukształtowaniu. W artykule omówione zostały dwa przykłady takich obiektów, pełniących funkcje „punktu charakterystycznego”.

4

Problemy projektowe i wykonawcze nietypowych konstrukcji łukowych na przykładzie wiaduktu WN-01 A w ciągu drogi ekspresowej S5 w węźle „Woźniki”

Markocki B., Stana M., Oleszek R.

Mosty

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2011

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nr 4

30--35

PL

Większość obiektów mostowych na drogach szybkiego ruchu to typowe, powtarzalne konstrukcje inżynierskie. W niektórych sytuacjach istnieje jednak potrzeba wprowadzania pewnego urozmaicenia przestrzennego. Dlatego naturalną praktyką stało się lokalizowanie, na dłuższych odcinkach tras infrastruktury drogowej tzw. punktów charakterystycznych, czyli obiektów inżynierskich odbiegających formą architektoniczną od pozostałych wiaduktów i mostów.

5

The method for determining the characteristic points of signatures based on IPAN99 algorithm

Doroz R., Kostorz I.

Journal of Medical Informatics & Technologies

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2010

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Vol. 15

41-46

EN

The paper puts forward a new method of determination of signatures' characteristic points. The method is based on seeking points of the highest curvature using the IPAN99 algorithm. The way of IPAN99 algorithm parameters' automatic selection for a particular signature has been fully described. Moreover, the way of determination of additional characteristic points, important for a signatures analysis, has been shown. The presented results of carried out experiments confirm that the proposed method is useful for signature recognition and verification.

6

Software and methods for steganography

Bailey K., Condeli J., Curran K.

Image Processing & Communications

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2005

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Vol. 10, no 2

103-130

EN

The object of steganography is to send a message through some innocuous carrier to a receiver while preventing anyone else from knowing that a message is being sent. The carrier can be one of several forms of digital media however the most common type of carrier used is an image. The image should not attract any attention as a carrier of a message and should look as close as possible to an ordinary image. This paper summarises recent research in the area of steganography with the aim of evaluating the trends in this area and developing a perspective on it. It looks at the application of steganography to digital images. Different ways of hiding the message sender arc discussed. An extensive study of existing steganography software is provided. Watermarking and cryptography are briefly described. Watermarking is the process of hiding information in a carrier in order to protect the ownership of text, music, films and art. Steganography techniques can be used for the purposes of watermarking. It is important also to briefly mention cryptography as it is commonly used along with steganography to generate an encrypted message to be hidden in a carrier.

7

Image motion estimation: a survey

Marchewka A.

Image Processing & Communications

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2005

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Vol. 10, no 1

5-12

EN

This article has the review character and it is an introduction to research in motion analysis used to video sequence compression. In this publication all algorithms are classified into three groups: change detection in scene, characteristic point in image and optical flow. From the group mentioned above, the method that fits best for use in telecommunication systems has emerged.