Interest in the conservation of paintings grows year by year. Their periodic inspection is
essential for their conservation over the time. Thermographic non-destructive inspection is
one technique useful for paintings, but it is essential to be able to detect buried defects while
minimising the level of thermal stimulus. This paper describes a pulse-compression infrared
thermography technique whereby defect detection is optimized while minimising the rise in
temperature. To accomplish this task, LED lamps driven by a coded waveform based on a …