2 research outputs found

    Π ΠΎΠ·Ρ€ΠΎΠ±ΠΊΠ° ΠΌΠ΅Ρ‚ΠΎΠ΄Ρƒ Π»ΠΎΠΊΠ°Π»Ρ–Π·Π°Ρ†Ρ–Ρ— ΠΎΠ±'Ρ”ΠΊΡ‚Π° ΠΏΡ€ΠΈΠ²'язки Π½Π° ΠΏΠΎΡ‚ΠΎΡ‡Π½ΠΎΠΌΡƒ Π·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½Π½Ρ– Π· ΠΊΡ–Π»ΡŒΠΊΠΎΠΌΠ° яскравими ΠΎΠ±'Ρ”ΠΊΡ‚Π°ΠΌΠΈ

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    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.ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΌΠ΅Ρ‚ΠΎΠ΄ формирования ΡƒΠ½ΠΈΠΌΠΎΠ΄Π°Π»ΡŒΠ½ΠΎΠΉ Ρ€Π΅ΡˆΠ°ΡŽΡ‰Π΅ΠΉ Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΈ ΠΏΡ€ΠΈ привязкС коррСляционно-ΡΠΊΡΡ‚Ρ€Π΅ΠΌΠ°Π»ΡŒΠ½Ρ‹Ρ… систСм Π½Π°Π²ΠΈΠ³Π°Ρ†ΠΈΠΈ ΠΊ повСрхности визирования с нСсколькими яркими ΠΎΠ±ΡŠΠ΅ΠΊΡ‚Π°ΠΌΠΈ. Π’Ρ‹Π±Ρ€Π°Π½Ρ‹ ΠΌΠΎΠ΄Π΅Π»ΠΈ Ρ‚Π΅ΠΊΡƒΡ‰Π΅Π³ΠΎ ΠΈ эталонного ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ, осущСствлСна постановка ΠΈ Ρ€Π΅ΡˆΠ΅Π½Ρ‹ Π·Π°Π΄Π°Ρ‡ΠΈ обнаруТСния ΠΈ ΠΌΠ½ΠΎΠ³ΠΎΠΏΠΎΡ€ΠΎΠ³ΠΎΠ²ΠΎΠΉ сСлСкции ΠΎΠ±ΡŠΠ΅ΠΊΡ‚Π° привязки Π½Π° ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΈ с высокой ΠΎΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠ²ΠΎΠΉ Π½Π°ΡΡ‹Ρ‰Π΅Π½Π½ΠΎΡΡ‚ΡŒΡŽ. ΠŸΠΎΠ»ΡƒΡ‡Π΅Π½Ρ‹ количСствСнныС ΠΎΡ†Π΅Π½ΠΊΠΈ вСроятности Π»ΠΎΠΊΠ°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ ΠΎΠ±ΡŠΠ΅ΠΊΡ‚Π° привязки Π½Π° ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΈΠ—Π°ΠΏΡ€ΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄ формування ΡƒΠ½Ρ–ΠΌΠΎΠ΄Π°Π»ΡŒΠ½ΠΎΡ— Π²ΠΈΡ€Ρ–ΡˆΠ°Π»ΡŒΠ½ΠΎΡ— Ρ„ΡƒΠ½ΠΊΡ†Ρ–Ρ— ΠΏΡ€ΠΈ ΠΏΡ€ΠΈΠ²'язці корСляційно-Π΅ΠΊΡΡ‚Ρ€Π΅ΠΌΠ°Π»ΡŒΠ½ΠΈΡ… систСм Π½Π°Π²Ρ–Π³Π°Ρ†Ρ–Ρ— Π΄ΠΎ ΠΏΠΎΠ²Π΅Ρ€Ρ…Π½Ρ– візування Π· ΠΊΡ–Π»ΡŒΠΊΠΎΠΌΠ° яскравими ΠΎΠ±'Ρ”ΠΊΡ‚Π°ΠΌΠΈ. ΠžΠ±Ρ€Π°Π½Ρ– ΠΌΠΎΠ΄Π΅Π»Ρ– ΠΏΠΎΡ‚ΠΎΡ‡Π½ΠΎΠ³ΠΎ Ρ‚Π° Π΅Ρ‚Π°Π»ΠΎΠ½Π½ΠΎΠ³ΠΎ Π·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΡŒ, здійснСна постановка Ρ– Π²ΠΈΡ€Ρ–ΡˆΠ΅Π½Ρ– завдання виявлСння Ρ‚Π° Π±Π°Π³Π°Ρ‚ΠΎΠΏΠΎΡ€ΠΎΠ³ΠΎΠ²ΠΎΡ— сСлСкції ΠΎΠ±'Ρ”ΠΊΡ‚Π° ΠΏΡ€ΠΈΠ²'язки Π½Π° Π·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½Π½Ρ– Π· високою ΠΎΠ±'Ρ”ΠΊΡ‚ΠΎΠ²ΠΎΡ— Π½Π°ΡΠΈΡ‡Π΅Π½Ρ–ΡΡ‚ΡŽ. ΠžΠ΄Π΅Ρ€ΠΆΠ°Π½Ρ– ΠΊΡ–Π»ΡŒΠΊΡ–ΡΠ½Ρ– ΠΎΡ†Ρ–Π½ΠΊΠΈ ймовірності Π»ΠΎΠΊΠ°Π»Ρ–Π·Π°Ρ†Ρ–Ρ— об’єкта привязки Π½Π° Π·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½Π½
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