Conference Publication Details
Mandatory Fields
Mc Elhinney, CP;Hennelly, BM;Naughton, TJ
PHOTON MANAGEMENT III
Focused image creation approaches for macroscopic objetcs encoded in digital holograms
2008
January
Published
1
0 ()
Optional Fields
3-DIMENSIONAL OBJECT RECOGNITION PHASE-CONTRAST MICROSCOPY NUMERICAL RECONSTRUCTION ZERO-ORDER REAL-TIME COMPRESSION SEGMENTATION ELIMINATION DEPTH
When a digital hologram is reconstructed only points oil objects within the depth of focus at the reconstruction distance are in focus. For complex scenes. scenes containing multiple objects or multiple object features located at different depths, this call lead to a reconstruction with large blurred regions. Using a depth-from-focus algorithm we have developed an approach to extract an objects depth information in the form of a depth map from volumes of reconstructions, where each reconstruction in the volume is a reconstruction at a different focal plane. By combining the depth map with the volume of reconstructions used to calculate the depth map we can create an image, an extended focus image, where the full scene is in focus. To our knowledge, this is the first technique which creates extended focused images of digital holograms encoding macroscopic objects. We present results for digital holograms containing low and hi-h contrast macroscopic objects.
10.1117/12.782781
Grant Details