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Litiny s kuličkovým grafitem legované niklem

100%

Popánková G. , Pacal B. , Hudec R.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

1998

tom z. 57

121-123

Možnosti použití akustické emise při mechanickém zkoušení materiálů

100%

Hudec R. , Reinisch M. , Vlach B.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

1999

tom z. 59

95-98

Classification of animals to determine the migration potential at the construction of new infrastructure

100%

Matuska S. , Hudec R. , Benco M. , Zachariasova M.

Archives of Transport System Telematics

2013

tom Vol. 6, iss. 4

26--30

At the planning and construction of new infrastructures, the information about migration potential of animals in a target area is needed. This information will be used to design of migration corridors for wild animals. To determine the migration potential of animals based on distributed video camera system, new methods for object recognition and classification are developed. In general, an object recognition system consists of three steps, namely, the image feature extraction from the training database, training the classifier and evaluation of query image of object/animal. In this paper, an extraction of local key point by SIFT or SURF descriptors, bags of key points method in combination with SVM classifier and two hybrid key points detection methods are proposed in detail.

3D objects modelling and description from a traffic flow

100%

Bojmir M. , Hudec R. , Kamencay P. , Pirnik R.

Archives of Transport System Telematics

2013

tom Vol. 6, iss. 3

4--9

Contemporary research activities in the area of transportation systems usually utilize computer vision techniques. These activities are mostly oriented to the analysis of traffic flow. Key parts of the analysis consist of detection, extraction, modelling and recognition of objects in the traffic flow. Additional information can be obtained by the object tracking, too. The main aim of this contribution is to propose a new method for modelling 3D objects that are moving in the traffic flow. At the beginning of this paper, basic methods of object detection and extraction are shortly described. Moreover, the modified algorithm based on the object extraction and 3D models creation by mesh is also proposed. That mesh model is generated from a depth map. Finally, the results of proposed method are presented in the last part of this paper.

Simple electrochemical determination of hydrazine in water

75%

Lauko L. , Hudec R. , Lenghartova K. , Manova A. , Cacho F. , Beinrohr E.

Polish Journal of Environmental Studies

2015

tom 24

nr 4

Hydrazine in water samples is determined by constant current chronopotentiometry in porous carbon electrodes. Hydrazine in alkaline solutions is oxidised to nitrogen in the pores of the electrode by constant current. Two types of electrodes made of reticulated vitreous carbon (RVC) were used, one fabricated from crushed RVC particles, the other with the original RVC material of 100 ppi porosity. The former is suitable for hydrazine concentrations above 0.7 mg·dm⁻³ up to 50 mg·dm⁻³, the latter for the 8-700 µg·dm⁻³ range. The method was used for water samples, including boiler water.