듀얼-패스 필터를 활용한 적외선 이미지의 해상도 향상
Improving the resolution of an Infrared Image by using a Dual-pass filter
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The infrared, brought into photography in the late 19th century, provides image information that human eye can not perceive, initially adopted by the crime photo. Since then, through continuous research, infrared is being applied various field of application such as forgery, medical image technology. Digital in photography started about 10years ago but has made rapid progress in a short period of time with ripple effects. Currently, digital devices are the principal means of image making. Instead of formerly used infrared films, the image sensor of general digital camera is in response to infrared, thus easy and simple. However, the infrared images result in the lower resolution than the visible light because of the characteristics and the devices. In this thesis, we improve the resolution of digital infrared photography and study on the dual pass filter for use the light at particular wavelength. Confirming diffraction and chromatic aberration cause the low resolution of the infrared photo, we enhance the resolution of the digital infrared image to the level of the visible light image by adjusting the aperture to reduce diffraction and by making infrared filters to decrease chromatic aberration. Alternatively, we suggest placement of the dual-pass Infrared filter instead of normal infrared filter.
Abstract
The infrared, brought into photography in the late 19th century, provides image information that human eye can not perceive, initially adopted by the crime photo. Since then, through continuous research, infrared is being applied various field of application such as forgery, medical image technology. Digital in photography started about 10years ago but has made rapid progress in a short period of time with ripple effects. Currently, digital devices are the principal means of image making. Instead of formerly used infrared films, the image sensor of general digital camera is in response to infrared, thus easy and simple. However, the infrared images result in the lower resolution than the visible light because of the characteristics and the devices. In this thesis, we improve the resolution of digital infrared photography and study on the dual pass filter for use the light at particular wavelength. Confirming diffraction and chromatic aberration cause the low resolution of the infrared photo, we enhance the resolution of the digital infrared image to the level of the visible light image by adjusting the aperture to reduce diffraction and by making infrared filters to decrease chromatic aberration. Alternatively, we suggest placement of the dual-pass Infrared filter instead of normal infrared filter.
참고문헌 (20)
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