Patent attributes
Enhancing edges of objects in a thermal image comprises receiving a thermal image and generating a gradient magnitude image comprising a plurality of pixels having associated gradient magnitude values. The gradient magnitude image is partitioned into subregions and gradient magnitude statistics are calculated for each. Mapping parameters are calculated for each of the subregions that equalize and smooth a dynamic range of the corresponding gradient magnitude statistics across the subregions. The mapping parameters calculated for each of the subregions are applied to pixels in the subregions to generate enhanced gradient magnitude values having equalized luminosity and contrast, and a wireframe image is formed therefrom having enhanced edges of objects. The wireframe image is displayed on a display device, wherein the wireframe image appears as a decluttered line drawing where the enhanced edges have increased luminosity and contrast compared to the thermal image to reduce the cognitive load of the user.
