7 research outputs found

    ๋ณดํ—˜๋ฒ• ์‹ฌํฌ์ง€์›€-๋ณดํ—˜ํŒ๋ก€์˜ ๋™ํ–ฅ๊ณผ ๋ฌธ์ œ : ๊ณ ์ง€์˜๋ฌด์— ๊ด€ํ•œ ๊ณ ์ฐฐ -๋Œ€๋ฒ•์›ํŒ๋ก€์˜ ๋™ํ–ฅ๊ณผ ์ด์— ๋Œ€ํ•œ ๋น„ํŒ์„ ์ค‘์‹ฌ์œผ๋กœ-

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    ๊ณ ์ง€์˜๋ฌด๋Š” ๋ณดํ—˜๊ณ„์•ฝ์„ ๋‹ค๋ฅธ ๊ณ„์•ฝ์œผ๋กœ๋ถ€ํ„ฐ ๊ตฌ๋ณ„์ง“๋Š” ์ง•ํ‘œ์˜ ํ•˜๋‚˜์ผ ๋ฟ๋งŒ ์•„๋‹ˆ๋ผ, ์ด ์˜๋ฌด์˜ ์ œ๋Œ€๋กœ ๋œ ์ดํ–‰์€ ๋ณดํ—˜๊ณ„์•ฝ์˜ ์ฒด๊ฒฐ๊ณผ์ •์—์„œ ์žˆ์–ด ๊ฐ€์žฅ ์ค‘์š”ํ•œ ๋ชซ์„ ์ฐจ์ง€ํ•˜๊ณ  ์žˆ๋‹ค๊ณ  ํ•ด๋„ ๊ณผ์–ธ์ด ์•„๋‹ˆ๋‹ค. ๊ทธ๋ฆฌ๊ณ  ๋ณดํ—˜๋ถ„์Ÿ์˜ ๋‹ค์ˆ˜, ํŠนํžˆ ์ธ๋ณดํ—˜๋ถ„์Ÿ์˜ ํƒœ๋ฐ˜์ด ์ด ์˜๋ฌด์˜ ์ œ๋Œ€๋กœ ๋œ ์ดํ–‰ ์—ฌ๋ถ€์™€ ๊ด€๋ จ์ด ์žˆ์–ด ๋ณดํ—˜๋ฒ• ์ด๋ก ๊ณผ ์‹ค๋ฌด ๋ชจ๋‘์— ์žˆ์–ด ๊ณ ์ง€์˜๋ฌด์— ๊ด€ํ•œ ๋ฒ•๋ฆฌ๋Š” ์—„์ฒญ๋‚œ ์ค‘์š”์„ฑ์„ ๊ฐ€์ง€๊ณ  ์žˆ๋‹ค. ๊ณ ์ง€์˜๋ฌด๋Š” ๋ณดํ—˜๊ณ„์•ฝ์˜ ์ฒด๊ฒฐ ํ›„์— ๊ณ„์•ฝ์ƒ์˜ ํšจ๊ณผ๋กœ์„œ ๋ณดํ—˜๊ณ„์•ฝ์ž ๋“ฑ์ด ๋ถ€๋‹ดํ•˜๋Š” ์˜๋ฌด๊ฐ€ ์•„๋‹ˆ๋ผ, ์ „ํ˜•์ ์ธ ๋ฒ•์ •์˜๋ฌด์— ์†ํ•œ๋‹ค. ๊ณ ์ง€์˜๋ฌด๋Š” ๋ณดํ—˜๊ณ„์•ฝ์˜ ์ตœ๋Œ€์„ ์˜์„ฑ ๋‚ด์ง€ ์ฒด์•ฝ๋‹น์‚ฌ์ž ์‚ฌ์ด์˜ ์ •๋ณด์˜ ๋ถˆ๊ท ํ˜•์„ ๊ณ ๋ คํ•˜์—ฌ ๋ณดํ—˜๋ฒ•์ด ํŠนํžˆ ์ธ์ •ํ•œ ์ „๊ณ„์•ฝ์ (ๅ‰ๅฅ‘็ด„็š„) ์˜๋ฌด์ด๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค. ๊ทธ๋ฆฌ๊ณ  ๊ณ ์ง€๋œ ๋‚ด์šฉ์€ ๊ทธ ์ž์ฒด๊ฐ€ ๊ณ„์•ฝ์˜ ๋‚ด์šฉ์ด ๋˜๊ฑฐ๋‚˜ ๋ฌต์‹œ์ ์ธ ๊ณ„์•ฝ์กฐ๊ฑด์ด ๋˜๋Š” ๊ฒƒ๋„ ์•„๋‹ˆ๋‹ค. ์‚ฌํšŒ๊ฒฝ์ œ์  ์ œ๋„๋กœ์„œ ๋ณดํ—˜์€ ํŠน์ •ํ•œ ์œ„ํ—˜์ด ๋ณดํ—˜๋‹จ์ฒด์— ๊ฐ€์ž…ํ•˜๊ธฐ ์ „์—, ๋ฒ•์ ์œผ๋กœ๋Š” ๊ฐœ๋ณ„์  ๋ณดํ—˜๊ณ„์•ฝ์ด ์„ฑ๋ฆฝํ•˜๊ธฐ ์ „์— ๋ณดํ—˜์ž๊ฐ€ ๊ทธ ์œ„ํ—˜์˜ ์ ๊ฒฉ์„ฑ์„ ์‹ฌ์‚ฌํ•˜์—ฌ ์ด์˜ ์ธ์ˆ˜๋ฅผ ์›์ฒœ์ ์œผ๋กœ ๊ฑฐ์ ˆํ•˜๊ฑฐ๋‚˜ ๋ณดํ—˜๋ฃŒ๋ฅผ ๋†’๊ฒŒ ์ฑ…์ •ํ•˜๋Š” ๋“ฑ์˜ ์กฐ๊ฑด์„ ๋ถ€๊ฐ€ํ•˜๋Š” ๊ฒƒ์„ ๋ฐ”ํƒ•์œผ๋กœ ํ•˜๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค. ๋‹ค์ˆ˜๊ณ„์•ฝ์ด๋ฉฐ ์ตœ๋Œ€์„ ์˜๊ณ„์•ฝ์ธ ๋ณดํ—˜๊ณ„์•ฝ์˜ ์„ฑ๊ฒฉ์€ ๋ณดํ—˜๊ณ„์•ฝ์ž์—๊ฒŒ ์œ„ํ—˜์‹ฌ์‚ฌ๋ฅผ ์œ„ํ•œ ๊ธฐ์ดˆ์ž๋ฃŒ๋ฅผ ์ œ๊ณตํ•  ์˜๋ฌด๋ฅผ ๋ถ€๊ณผํ•˜๊ณ  ๋ณดํ—˜์ž๋Š” ๊ณ ์ง€์‚ฌํ•ญ์— ์˜๊ฑฐํ•˜์—ฌ ์œ„ํ—˜์ธ์ˆ˜ ์—ฌ๋ถ€์™€ ๊ทธ ์กฐ๊ฑด์„ ์ •ํ•˜๊ฒŒ ๋œ๋‹ค

    Lane Detection for Adaptive Control of Autonomous Vehicle

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    Currently, most automobile companies are interested in research on intelligent autonomous vehicle. They are mainly focused on driverโ€™s intelligent assistant and driver replacement. In order to develop an autonomous vehicle, lateral and longitudinal control is necessary. This paper presents a lateral and longitudinal control system for autonomous vehicle that has only mono-vision camera. For lane detection, we present a new lane detection algorithm using clothoid parabolic road model. The proposed algorithm in compared with three other methods such as virtual line method, gradient method and hough transform method, in terms of lane detection ratio. For adaptive control, we apply a vanishing point estimation to fuzzy control. In order to improve handling and stability of the vehicle, the modeling errors between steering angle and predicted vanishing point are controlled to be minimized. So, we established a fuzzy rule of membership functions of inputs (vanishing point and differential vanishing point) and output (steering angle). For simulation, we developed 1/8 size robot (equipped with mono-vision system) of the actual vehicle and tested it in the athletics track of 400 meter. Through the test, we prove that our proposed method outperforms 98 % in terms of detection rate in normal condition. Compared with virtual line method, gradient method and hough transform method, our method also has good performance in the case of clear, fog and rain weather.2

    Smart Traffic Controll System

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    ๋ณธ ๋ฐœ๋ช…์€ ๋ณดํ–‰์ž ์‹ ํ˜ธ๋“ฑ๊ณผ ์ฐจ๋Ÿ‰ ์‹ ํ˜ธ๋“ฑ์ด ์„ค์น˜๋˜๋Š” ํšก๋‹จ๋ณด๋„์˜ ์Šค๋งˆํŠธ ๊ตํ†ต ์ œ์–ด ์‹œ์Šคํ…œ์— ์žˆ์–ด์„œ, ์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„๊ฐ€ ์„ค์น˜๋˜๋Š” ๋„๋กœ๋ฅผ ์ดฌ์ƒํ•˜์—ฌ ์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„์— ์ ‘๊ทผํ•˜๋Š” ์ฐจ๋Ÿ‰์„ ๊ฒ€์ถœํ•˜๊ณ  ์ƒ๊ธฐ ์ฐจ๋Ÿ‰์˜ ์œ„์น˜, ์†๋„, ๋˜๋Š” ๊ฐ€์†๋„๋ฅผ ๊ฒ€์ถœํ•˜๊ฑฐ๋‚˜, ์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„๋ฅผ ์ดฌ์ƒํ•˜์—ฌ ๋ณดํ–‰์ž์˜ ํšก๋‹จ ์—ฌ๋ถ€๋ฅผ ๊ฒ€์ถœํ•˜๋Š” ์˜์ƒ ์ฒ˜๋ฆฌ๋ถ€; ์ƒ๊ธฐ ๋ณดํ–‰์ž ์‹ ํ˜ธ๋“ฑ๊ณผ ์ƒ๊ธฐ ์ฐจ๋Ÿ‰ ์‹ ํ˜ธ๋“ฑ์˜ ์ ๋“ฑ์„ ์ œ์–ดํ•˜๋Š” ์‹ ํ˜ธ๋“ฑ ์ œ์–ด๋ถ€; ์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„์— ์„ค์น˜๋˜๋Š” ์‹œ๊ฐ ๋˜๋Š” ์ฒญ๊ฐ ๊ฒฝ๊ณ ๋ฅผ ์ถœ๋ ฅํ•˜๋Š” ๊ฒฝ๊ณ ๋ถ€; ๋ฌด์„  ํ†ต์‹ ์„ ์ˆ˜ํ–‰ํ•˜๋Š” ํ†ต์‹ ๋ถ€(140); ๋ฐ ์ƒ๊ธฐ ์˜์ƒ ์ฒ˜๋ฆฌ๋ถ€์—์„œ ๊ฒ€์ถœ๋œ ์ฐจ๋Ÿ‰์— ๊ด€ํ•œ ์ •๋ณด ๋ฐ ์ƒ๊ธฐ ๋ณดํ–‰์ž์— ๊ด€ํ•œ ์ •๋ณด๋ฅผ ์ธ๊ฐ€๋ฐ›๊ณ , ์ƒ๊ธฐ ์‹ ํ˜ธ๋“ฑ ์ œ์–ด๋ถ€์—์„œ ์ƒ๊ธฐ ์‹ ํ˜ธ๋“ฑ ๊ฐ๊ฐ์˜ ์ ๋“ฑ ์‹ ํ˜ธ ์ •๋ณด๋ฅผ ์ธ๊ฐ€๋ฐ›์•„, ์ƒ๊ธฐ ์ •๋ณด๋“ค๋กœ๋ถ€ํ„ฐ ํšก๋‹จ๋ณด๋„์— ์‚ฌ๊ณ  ์œ„ํ—˜์ด ์žˆ๋‹ค๊ณ  ํŒ๋‹จ๋˜๋ฉด ์ƒ๊ธฐ ๊ฒฝ๊ณ ๋ถ€๊ฐ€ ์ƒ๊ธฐ ๊ฒฝ๊ณ ๋ฅผ ์ถœ๋ ฅํ•˜๋„๋ก ์ œ์–ดํ•˜๊ฑฐ๋‚˜ ์ƒ๊ธฐ ํ†ต์‹ ๋ถ€๋ฅผ ํ†ตํ•ด ์ƒ๊ธฐ ์‚ฌ๊ณ  ๋ฐœ์ƒ ๊ฐ€๋Šฅ์„ฑ ์ •๋ณด๋ฅผ ์ „์†กํ•˜๋Š” ์ œ์–ด๋ถ€๋ฅผ ํฌํ•จํ•˜๋Š” ์Šค๋งˆํŠธ ๊ตํ†ต ์ œ์–ด ์‹œ์Šคํ…œ์„ ์ œ๊ณตํ•œ๋‹ค.ํšก๋‹จ๋ณด๋„์— ์„ค์น˜๋˜๋Š” ๋ณดํ–‰์ž ์‹ ํ˜ธ๋“ฑ๊ณผ ์ฐจ๋Ÿ‰ ์‹ ํ˜ธ๋“ฑ์„ ํฌํ•จํ•˜๋Š” ์Šค๋งˆํŠธ ๊ตํ†ต ์ œ์–ด ์‹œ์Šคํ…œ์— ์žˆ์–ด์„œ,์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„๊ฐ€ ์„ค์น˜๋˜๋Š” ๋„๋กœ๋ฅผ ์ดฌ์ƒํ•˜์—ฌ ์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„์— ์ ‘๊ทผํ•˜๋Š” ์ฐจ๋Ÿ‰์„ ๊ฒ€์ถœํ•˜๊ณ  ์ƒ๊ธฐ ์ฐจ๋Ÿ‰์˜ ์œ„์น˜, ์†๋„, ๋˜๋Š” ๊ฐ€์†๋„๋ฅผ ๊ฒ€์ถœํ•˜๊ฑฐ๋‚˜, ์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„๋ฅผ ์ดฌ์ƒํ•˜์—ฌ ๋ณดํ–‰์ž์˜ ํšก๋‹จ ์—ฌ๋ถ€๋ฅผ ๊ฒ€์ถœํ•˜๋Š” ์˜์ƒ ์ฒ˜๋ฆฌ๋ถ€;์ƒ๊ธฐ ๋ณดํ–‰์ž ์‹ ํ˜ธ๋“ฑ๊ณผ ์ƒ๊ธฐ ์ฐจ๋Ÿ‰ ์‹ ํ˜ธ๋“ฑ์˜ ์ ๋“ฑ์„ ์ œ์–ดํ•˜๋Š” ์‹ ํ˜ธ๋“ฑ ์ œ์–ด๋ถ€;์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„์— ์„ค์น˜๋˜๋Š” ์‹œ๊ฐ ๋˜๋Š” ์ฒญ๊ฐ ๊ฒฝ๊ณ ๋ฅผ ์ถœ๋ ฅํ•˜๋Š” ๊ฒฝ๊ณ ๋ถ€;๋ฌด์„  ํ†ต์‹ ์„ ์ˆ˜ํ–‰ํ•˜๋Š” ํ†ต์‹ ๋ถ€; ๋ฐ์ƒ๊ธฐ ์˜์ƒ ์ฒ˜๋ฆฌ๋ถ€์—์„œ ๊ฒ€์ถœ๋œ ์ฐจ๋Ÿ‰์— ๊ด€ํ•œ ์ •๋ณด ๋ฐ ์ƒ๊ธฐ ๋ณดํ–‰์ž์— ๊ด€ํ•œ ์ •๋ณด๋ฅผ ์ธ๊ฐ€๋ฐ›๊ณ , ์ƒ๊ธฐ ์‹ ํ˜ธ๋“ฑ ์ œ์–ด๋ถ€์—์„œ ์ƒ๊ธฐ ์‹ ํ˜ธ๋“ฑ ๊ฐ๊ฐ์˜ ์ ๋“ฑ ์‹ ํ˜ธ ์ •๋ณด๋ฅผ ์ธ๊ฐ€๋ฐ›์•„, ์ƒ๊ธฐ ์ •๋ณด๋“ค๋กœ๋ถ€ํ„ฐ ํšก๋‹จ๋ณด๋„์— ์‚ฌ๊ณ  ์œ„ํ—˜์ด ์žˆ๋‹ค๊ณ  ํŒ๋‹จ๋˜๋ฉด ์ƒ๊ธฐ ๊ฒฝ๊ณ ๋ถ€๊ฐ€ ์ƒ๊ธฐ ๊ฒฝ๊ณ ๋ฅผ ์ถœ๋ ฅํ•˜๋„๋ก ์ œ์–ดํ•˜๊ฑฐ๋‚˜ ์ƒ๊ธฐ ํ†ต์‹ ๋ถ€๋ฅผ ํ†ตํ•ด ์ƒ๊ธฐ ์‚ฌ๊ณ  ์œ„ํ—˜ ์ •๋ณด๋ฅผ ์ „์†กํ•˜๋Š” ์ œ์–ด๋ถ€๋ฅผ ํฌํ•จํ•˜๊ณ ,์ƒ๊ธฐ ์ œ์–ด๋ถ€๋Š” ์ƒ๊ธฐ ๋ณดํ–‰์ž ์‹ ํ˜ธ๋“ฑ์ด ๋…น์ƒ‰์ด๊ฑฐ๋‚˜ ์ƒ๊ธฐ ์ฐจ๋Ÿ‰ ์‹ ํ˜ธ๋“ฑ์ด ์ ์ƒ‰์ด๊ณ  ์ƒ๊ธฐ ์˜์ƒ์ฒ˜๋ฆฌ๋ถ€๋กœ๋ถ€ํ„ฐ ์ธ๊ฐ€๋œ ์ฐจ๋Ÿ‰ ์†๋„ ๋˜๋Š” ๊ฐ€์†๋„๊ฐ€ ์„ค์ •๊ฐ’ ์ด์ƒ์ผ ๊ฒฝ์šฐ, ๋˜๋Š” ์ƒ๊ธฐ ๋ณดํ–‰์ž ์‹ ํ˜ธ๋“ฑ์ด ์ ์ƒ‰์ด๊ฑฐ๋‚˜ ์ƒ๊ธฐ ์ฐจ๋Ÿ‰ ์‹ ํ˜ธ๋“ฑ์ด ๋…น์ƒ‰์ด๊ณ  ์ƒ๊ธฐ ์˜์ƒ ์ฒ˜๋ฆฌ๋ถ€๋กœ๋ถ€ํ„ฐ ์ธ๊ฐ€๋œ ์ƒ๊ธฐ ๋ณดํ–‰์ž์— ๊ด€ํ•œ ์ •๋ณด๊ฐ€ ๋ณดํ–‰์ž ํšก๋‹จ ์ค‘์ธ ๊ฒฝ์šฐ ์ƒ๊ธฐ ํšก๋‹จ๋ณด๋„์—์„œ ์‚ฌ๊ณ  ์œ„ํ—˜์ด ์žˆ๋‹ค๊ณ  ํŒ๋‹จํ•˜๊ณ ,์ƒ๊ธฐ ์ œ์–ด๋ถ€๋Š” ์‚ฌ๊ณ  ์œ„ํ—˜์ด ์žˆ๋‹ค๊ณ  ํŒ๋‹จ๋˜๋ฉด ์ƒ๊ธฐ ๋ณดํ–‰์ž ์‹ ํ˜ธ๋“ฑ์ด ์ ์ƒ‰์œผ๋กœ ๋ณ€๊ฒฝ๋˜๋„๋ก ์ƒ๊ธฐ ์‹ ํ˜ธ๋“ฑ ์ œ์–ด๋ถ€๋ฅผ ์ œ์–ดํ•˜๋Š” ์Šค๋งˆํŠธ ๊ตํ†ต ์ œ์–ด ์‹œ์Šคํ…œ
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