Effect of color palette and text encoding on infrared thermal imaging perception with various screen resolution accuracy

Abstract

Thermal imaging cameras are predominantly employed for temperature detection in a wide range of production and life scenes. However, the efficacy of their temperature sensing efficiency is frequently influenced by interface display mode and device display accuracy, subsequently impacting the efficiency of equipment temperature measurement and identification efficiency. In this study, a comprehensive analysis of color modes and screen resolution in infrared thermal imagers was conducted to ascertain the optimal color mode for different resolutions. To thoroughly investigate the key factors influencing the perception of the display interface in thermal imaging cameras, two sets of experiments were conducted, with a specific focus on factors associated with object contour perception and text recognition. The research findings underscore that color patterns effect object perceptual recognition, and rainbow or iron red color palette modes exhibit enhanced efficiency at lower resolutions (120ppi, 256ppi), whereas the grey palette mode demonstrates superior performance at higher resolutions. Additionally, it was observed that positive polarity augments text recognition, but the position of the character is independent of efficiency. This article provides invaluable guidance and recommendations for color and text coding design of infrared interface display with different display precision.