Image acquisition method for IR images and thermal imaging camera

摘要

Image recording method for IR images (9, 10, 11, 12, 13), wherein for different focus settings (14, 15, 16, 17, 18) IR images (9, 10, 11, 12, 13) are recorded, wherein from the recorded IR images (9, 10, 11, 12, 13) for a given image area with a base transformation transformed images are calculated, wherein derived from the transformed images in each case a measure (20) and the associated focus setting (14, 15, 16, 17, 18), the measure (20) being monotonically dependent on the high frequency portion in the transformed image and on a number of edges in the IR image (9, 10, 11, 12, 13) from the derived and associated measures (20) an optimal measure (24) is determined, wherein one of the optimal measure (24) corresponding focus setting (27) is set and wherein when determining the optimal measure (24) an interpolation curve (23) the derived measures (20) as a function of zugeo rdneten focus settings (21) is calculated.