2 research outputs found
Π ΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄Ρ Π»ΠΎΠΊΠ°Π»ΡΠ·Π°ΡΡΡ ΠΎΠ±'ΡΠΊΡΠ° ΠΏΡΠΈΠ²'ΡΠ·ΠΊΠΈ Π½Π° ΠΏΠΎΡΠΎΡΠ½ΠΎΠΌΡ Π·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½Π½Ρ Π· ΠΊΡΠ»ΡΠΊΠΎΠΌΠ° ΡΡΠΊΡΠ°Π²ΠΈΠΌΠΈ ΠΎΠ±'ΡΠΊΡΠ°ΠΌΠΈ
To ensure the effective functioning of the correlation-extreme navigation systems (CENSs), a method is developed to localize a reference object (RO) in a current image (CI) with several bright objects. The peculiarity of the method consists in converting the CI to a binary unit by determining the average value of the background and setting it for the threshold of the image quantization, which in turn determines the amount of probabilities of errors of the first and second kinds as well as entails assigning the objects of the viewing surface (VS) and the backgrounds to two classes: the RO and the background. The CI model is represented by the brightness values of the corresponding objects and backgrounds of the VS in the differentiation elements. In the model of the current image, the RO has the highest brightness. Other objects that are similar in brightness and commensurate with the RO are categorized as false. The reference image (RI) is set by the contrast mark and the geometrical shape of the object, and it is binary. An algorism has been developed for localizing the RO in an image by searching for a fragment of a binary CI with a maximum value of units that coincides with the RI. The peculiarity of the algorithm consists in adapting the application procedure for the threshold conversion of a CI with an unknown value of the signal-noise ratio. A method has been developed to clarify the maximum value of the DF and to determine the coordinates of the RO in the field of the CI matrix. The method consists in the summation of the number of units of different sections and finding the highest value of the DF. The highest value of the DF coincides with the full match between the CI and the RI. An analytical expression has been obtained for the estimation of the probability of localizing the RO. The expression establishes dependence of the probability of localizing the RO on the parameters that are specified in the stages of solving the problem of localizing the RO, which are the identification, the multi-threshold selection, and the specification of the maximum DF. By modeling the process of forming the DF, numerical estimates have been obtained for the probability of localizing the RO. The research results indicate the feasibility of using the proposed method in a CENS in relation to a VS with several bright objects.ΠΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΌΠ΅ΡΠΎΠ΄ ΡΠΎΡΠΌΠΈΡΠΎΠ²Π°Π½ΠΈΡ ΡΠ½ΠΈΠΌΠΎΠ΄Π°Π»ΡΠ½ΠΎΠΉ ΡΠ΅ΡΠ°ΡΡΠ΅ΠΉ ΡΡΠ½ΠΊΡΠΈΠΈ ΠΏΡΠΈ ΠΏΡΠΈΠ²ΡΠ·ΠΊΠ΅ ΠΊΠΎΡΡΠ΅Π»ΡΡΠΈΠΎΠ½Π½ΠΎ-ΡΠΊΡΡΡΠ΅ΠΌΠ°Π»ΡΠ½ΡΡ
ΡΠΈΡΡΠ΅ΠΌ Π½Π°Π²ΠΈΠ³Π°ΡΠΈΠΈ ΠΊ ΠΏΠΎΠ²Π΅ΡΡ
Π½ΠΎΡΡΠΈ Π²ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½ΠΈΡ Ρ Π½Π΅ΡΠΊΠΎΠ»ΡΠΊΠΈΠΌΠΈ ΡΡΠΊΠΈΠΌΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠ°ΠΌΠΈ. ΠΡΠ±ΡΠ°Π½Ρ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΠ΅ΠΊΡΡΠ΅Π³ΠΎ ΠΈ ΡΡΠ°Π»ΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΉ, ΠΎΡΡΡΠ΅ΡΡΠ²Π»Π΅Π½Π° ΠΏΠΎΡΡΠ°Π½ΠΎΠ²ΠΊΠ° ΠΈ ΡΠ΅ΡΠ΅Π½Ρ Π·Π°Π΄Π°ΡΠΈ ΠΎΠ±Π½Π°ΡΡΠΆΠ΅Π½ΠΈΡ ΠΈ ΠΌΠ½ΠΎΠ³ΠΎΠΏΠΎΡΠΎΠ³ΠΎΠ²ΠΎΠΉ ΡΠ΅Π»Π΅ΠΊΡΠΈΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠ° ΠΏΡΠΈΠ²ΡΠ·ΠΊΠΈ Π½Π° ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΈ Ρ Π²ΡΡΠΎΠΊΠΎΠΉ ΠΎΠ±ΡΠ΅ΠΊΡΠΎΠ²ΠΎΠΉ Π½Π°ΡΡΡΠ΅Π½Π½ΠΎΡΡΡΡ. ΠΠΎΠ»ΡΡΠ΅Π½Ρ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΡΠ΅ ΠΎΡΠ΅Π½ΠΊΠΈ Π²Π΅ΡΠΎΡΡΠ½ΠΎΡΡΠΈ Π»ΠΎΠΊΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ ΠΎΠ±ΡΠ΅ΠΊΡΠ° ΠΏΡΠΈΠ²ΡΠ·ΠΊΠΈ Π½Π° ΠΈΠ·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½ΠΈΠΈΠΠ°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΎ ΠΌΠ΅ΡΠΎΠ΄ ΡΠΎΡΠΌΡΠ²Π°Π½Π½Ρ ΡΠ½ΡΠΌΠΎΠ΄Π°Π»ΡΠ½ΠΎΡ Π²ΠΈΡΡΡΠ°Π»ΡΠ½ΠΎΡ ΡΡΠ½ΠΊΡΡΡ ΠΏΡΠΈ ΠΏΡΠΈΠ²'ΡΠ·ΡΡ ΠΊΠΎΡΠ΅Π»ΡΡΡΠΉΠ½ΠΎ-Π΅ΠΊΡΡΡΠ΅ΠΌΠ°Π»ΡΠ½ΠΈΡ
ΡΠΈΡΡΠ΅ΠΌ Π½Π°Π²ΡΠ³Π°ΡΡΡ Π΄ΠΎ ΠΏΠΎΠ²Π΅ΡΡ
Π½Ρ Π²ΡΠ·ΡΠ²Π°Π½Π½Ρ Π· ΠΊΡΠ»ΡΠΊΠΎΠΌΠ° ΡΡΠΊΡΠ°Π²ΠΈΠΌΠΈ ΠΎΠ±'ΡΠΊΡΠ°ΠΌΠΈ. ΠΠ±ΡΠ°Π½Ρ ΠΌΠΎΠ΄Π΅Π»Ρ ΠΏΠΎΡΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠ° Π΅ΡΠ°Π»ΠΎΠ½Π½ΠΎΠ³ΠΎ Π·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½Ρ, Π·Π΄ΡΠΉΡΠ½Π΅Π½Π° ΠΏΠΎΡΡΠ°Π½ΠΎΠ²ΠΊΠ° Ρ Π²ΠΈΡΡΡΠ΅Π½Ρ Π·Π°Π²Π΄Π°Π½Π½Ρ Π²ΠΈΡΠ²Π»Π΅Π½Π½Ρ ΡΠ° Π±Π°Π³Π°ΡΠΎΠΏΠΎΡΠΎΠ³ΠΎΠ²ΠΎΡ ΡΠ΅Π»Π΅ΠΊΡΡΡ ΠΎΠ±'ΡΠΊΡΠ° ΠΏΡΠΈΠ²'ΡΠ·ΠΊΠΈ Π½Π° Π·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½Π½Ρ Π· Π²ΠΈΡΠΎΠΊΠΎΡ ΠΎΠ±'ΡΠΊΡΠΎΠ²ΠΎΡ Π½Π°ΡΠΈΡΠ΅Π½ΡΡΡΡ. ΠΠ΄Π΅ΡΠΆΠ°Π½Ρ ΠΊΡΠ»ΡΠΊΡΡΠ½Ρ ΠΎΡΡΠ½ΠΊΠΈ ΠΉΠΌΠΎΠ²ΡΡΠ½ΠΎΡΡΡ Π»ΠΎΠΊΠ°Π»ΡΠ·Π°ΡΡΡ ΠΎΠ±βΡΠΊΡΠ° ΠΏΡΠΈΠ²ΡΠ·ΠΊΠΈ Π½Π° Π·ΠΎΠ±ΡΠ°ΠΆΠ΅Π½Π½