• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1997.12a
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• pp.392-400
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• 1997

This study was conducted to develope the machine vision system of a robotic transplanter for bedding plants. Specific objectives of this study were 1) to get coordinates of the healthy seedlings except empty cells and bad seedlings in high-density plug tray, and 2) to get the angle of the leaves of the healthy seedlings to avoid damage to the seedlings by gripper. The results of this study are summarized as follows. (1) The machine vision system of a robotic transplanter was developed. (2) The success rates of detecting empty cell and bad seedlings in 72-cell and 128-cell plug trays were 98.8% and 94.9% respectively. (3) The success rates of calculating the angle of leaves in 72-cell and 128-cell plug trays were 93.5% and 91.0% respectively.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2002.02a
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• pp.432-437
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• 2002

기계시각을 이용한 포장 정보 수집에서는 태양광 조도변화의 큰 영향을 받는다. 본 연구 에서는 조도변화의 영향을 최소화하기 위해 다음과 같은 방법(1) 흑백 카메라를 사용하는 경우 지수는 Index=(equation omitted)로 선정한다. 여기서 A, B는 각각 목표판과 피사체의 Pixel값 (2) 칼라 카메라를 사용하는 경우 지수는 Index=(equation omitted) 선정한다. 여기서 $A_{\upsilon}$, $B_{\upsilon}$는 각각 목표판과 피사체의 $\upsilon$=(equation omitted) 값. 목표판을 피사체와 동시에 사용하여 같은 위치에서 영상을 촬영하였다. 촬영된 영상에서 목표판과 피사체의 pixel값 혹은 R, G, B값을 선정된 지수(Index)에 대입하여 조도의 영향을 최소화하였다.조도의 영향을 최소화하였다.조도의 영향을 최소화하였다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1997.12a
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• pp.368-374
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• 1997

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1997.12a
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• pp.3-10
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• 1997

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1997.12a
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• pp.362-367
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• 1997

• Transactions of the Korean Society of Mechanical Engineers B
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• v.36 no.11
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• pp.1091-1097
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• 2012

Nowadays, some movie theaters provide additional sensory information in 3D movies to enhance visually induced motion perception. However, no studies have investigated how motion perception increases. Thus, in this study, we examined the effect of visual coherent sensory information on visually induced motion perception and quantification of sensory information. A visual stimulus rotated sinusoidally and visual coherent sensory information were applied as vibrations to a subject's foot. We measured the sway of the subject's body by using a force plate and somatosensory bar rotation that represents the subject's perception of the horizon using an encoder. By using this data, we obtained the weight of the sensory information using a Kalman filter. As a result, it was found that subjects rotated the somatosensory bar more when visual coherent vibrations were applied. The weight of vision also increased when visual coherent vibrations were applied. Thus, we can conclude that visual coherent sensory information tends to enhance visually induced motion perception and weight of vision.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• v.11 no.2
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• pp.113-117
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• 2006

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2001.02a
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• pp.310-315
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• 2001

• Journal of the KSME
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• v.20 no.2
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• pp.123-130
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• 1980

산업용로보트는 보통의 자동 기계와는 달리 상대하는 대상물과의 위치적 관계가 중요하여, 시 시각각으로 변화하는 대상물의 위치정보를 로보트 자체의 구동에 반영하여야 한다. 따라서 종 래의 써보 메카니즘(Servomechanism)의 제어 기술에서 보다 고려되어야할 사항이 많으며 제어 방법자체도 기능 제어(Intelligent Control) 분야라는 새로운 범주에 속하여 활발한 연구가 되고 있다. 본문에서는 이러한 산업용로보트의 제어기술에 관하여 기술하기로 한다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• v.10 no.2
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• pp.268-272
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• 2005