A liquid crystal thermography calibration with true color image processing

作者：Rao, Yu^*; Zang, Shusheng; Huang, Minghai

来源：Chinese Optics Letters, 2009, 7(9): 795-797.

DOI：10.3788/COL20090709.0795

• Calibration data
• Hue-temperature
• Image noise reduction
• Liquid crystal thermography
• Measurement accuracy
• Measurement uncertainty
• Optical technique
• Thermochromic liquid crystals

Liquid crystal thermography is a high-resolution, non-intrusive optical technique for full-field temperature measurement. We present the detailed calibration data for the thermochromic liquid crystal (TLC) with a useful range of 41-60 degrees C. The calibration is done with true color image processing by using an isothermal calibrator. The hue-temperature curve of the TLC is obtained, and the measurement uncertainty is analyzed. Combined with the image noise reduction technique of a 5x5 median filter, the measurement accuracy of the liquid crystal thermography can be significantly improved by approximately 57.1%.

• 出版日期2009-9-10
• 单位上海交通大学