The invention discloses a local
gray level-entropy difference leak detecting
algorithm based on an
infrared image and belongs to the technical field of detecting. The innovation points of the local
gray level-entropy difference
leak detection locating
algorithm based on an image entropy theory, an
algorithm of local entropy of the
infrared image to be detected is improved, and a local weighted entropy algorithm, a
local variance weighted entropy algorithm, a local
gray level-entropy algorithm, a local gray level-weighted entropy algorithm and a local gray level-variance weighted entropy algorithm are achieved. In terms of the six improved algorithms, a large number of experimental tests prove that a detecting capacity of the local gray level-entropy algorithm is the strongest, accordingly target detecting strategies and algorithm processes of the local gray level-entropy algorithm are confirmed, and accuracy and validity of the local gray level-entropy algorithm is verified. The local gray level-entropy difference leak detecting algorithm based on the
infrared image not only inherits the advantages of an original local entropy difference method, but also well reflects that one point of the
infrared image is presented by entropy information through introduction of gray level information, and the entropy information reflects distribution conditions of gray levels, highlights performances of high gray level areas, sensitively detecting
temperature difference among images and acquires leaking targets.