• Proceedings of the Optical Society of Korea Conference
• /
• 1996.09a
• /
• pp.45-45
• /
• 1996

• Proceedings of the Optical Society of Korea Conference
• /
• 2005.07a
• /
• pp.22-23
• /
• 2005

• Proceedings of the Optical Society of Korea Conference
• /
• 2008.02a
• /
• pp.133-134
• /
• 2008

• Proceedings of the Optical Society of Korea Conference
• /
• 1997.08a
• /
• pp.41-41
• /
• 1997

• Proceedings of the IEEK Conference
• /
• 2000.06d
• /
• pp.50-53
• /
• 2000

In this work, the new algorithm that automatically extracts moving object of the video image is presented. In order to extract moving object, it is that velocity vectors correspond to each frame of the video image. Using the estimated velocity vector, the position of the object are determined. the value of the coordination of the object is initialized to the seed, and in the image plane, the moving object is automatically segmented by the region growing method. As the result of an application in sequential images, it is available to extract a moving object.

• Proceedings of the Optical Society of Korea Conference
• /
• 2009.02a
• /
• pp.541-542
• /
• 2009

We have developed an image reversal photoresist with high thermal stability and electric insulating properties for the single isolation structure of OLEDs. The thermal stability and electric insulating properties are investigated and compared with those of conventional insulator and cathode separator materials. The single isolation structure using the image reversal photoresist reduces the fabrication process steps and cuts down the manufacturing cost.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2002.08a
• /
• pp.285-288
• /
• 2002

We propose the use of synchronously moving micro-optics (lenslet arrays) for image pickup and display in three-dimensional integral imaging to overcome the upper resolution limit imposed by the Nyquist sampling theorem. With the proposed technique, we present an all-optical three-dimensional integral imaging projector. An optically addressed spatial light modulator is used, which potentially provides better image resolution than the conventional CCD and liquid crystal display pair. We present experimental results using a liquid crystal light valve.

• Journal of the Optical Society of Korea
• /
• v.10 no.2
• /
• pp.81-85
• /
• 2006

This study introduces an undefined self-imaging phenomenon, called here the pseudo-self-imaging phenomenon. The relative phases of the guided modes were used to discover how the pseudo-self-images are formed. The pseudo-self-image was found and measured experimentally. The experimental results showed that both the pseudo-self-image and the 0-dB self-image have similar intensity values and have opposite positions in the lateral direction.

• Proceedings of the Korean Institute of Intelligent Systems Conference
• /
• 1993.06a
• /
• pp.777-780
• /
• 1993

Three optical fuzzy calculating modules, MAX/MIN, NOT/THROUGH, and SUP/THROUGH operating modules, are proposed. The MAX/MIN operating on inputted 2 membership functions. The NOT/THROUGH operating module calculates the complement of the membership function. The SUP/THROUGH operating module outputs an image representing the supremum (least upper bound) of the membership function. The THROUGH operation passes the image of the inputted membership function from the entrance to the exit. This paper demonstrates that these modules can output the image into which the modules transform inputted images on the basis of operation on fuzzy logic.

• International Journal of Aerospace System Engineering
• /
• v.2 no.1
• /
• pp.12-17
• /
• 2015

Aero-optical effects induced by the flow around the optical window degrade the performance of the IR seeker, especially for the hypersonic flow. For the thermochemical non-equilibrium flow, index of refraction model and optical transmission calculation method are developed to predict the aero-optical effects. The optical distortion is discussed for the typical optical widow shape and flow condition. The influence on aero-optical effects is analyzed.