초록 ▼

A method for constructing an extended depth of field image from a plurality of source images taken of an object at substantially identical fields of view but at differing focal distances, the method including receiving the plurality of source images, and filtering the plurality of source images to o

A method for constructing an extended depth of field image from a plurality of source images taken of an object at substantially identical fields of view but at differing focal distances, the method including receiving the plurality of source images, and filtering the plurality of source images to obtain relatively high frequency components in each of the filtered images. The energy levels of the high frequency components are estimated. The sub-regions in each filtered image having energy levels which are greater than energy levels of sub-regions in other filtered images are selected. The selected sub-regions of each filtered image are mapped to corresponding sub-regions in each source image. Finally, the corresponding sub-regions of the source images are merged to obtain the extended depth of field image.

대표청구항 ▼

[What is claimed is:] [1.]a) receiving the plurality of source images,b) filtering the plurality of source images to obtain respective filtered images representing relatively high frequency components in each of the source images,c) estimating energy levels of the high frequency components in the fi

[What is claimed is:] [1.]a) receiving the plurality of source images,b) filtering the plurality of source images to obtain respective filtered images representing relatively high frequency components in each of the source images,c) estimating energy levels of the high frequency components in the filtered images,d) selecting sub-regions in each of the filtered images having energy levels which are greater than energy levels of sub-regions in other ones of the filtered images,e) mapping the selected sub-regions of each filtered image to corresponding sub-regions in each source image, andf) merging the corresponding sub-regions of the source images independently of any of the filtered images to obtain the extended depth of field image.