000			02333nam a2200277 4500
001			384668
010			_a0849309034
090			_a384668
100			_a20080318d2001 y0pory50 ba
101			_aeng
200			_aForensic uses of digital imaging _fJohn C. Russ
210			_aBoca Raton, FL [etc.] _cCRC _d2001
215			_aviii, 192 p. _cil. _d25 cm
330			_a1. Digital Cameras and Forensic Imaging: Introduction. Why go digital? Uses of digital imagery. Film as a light sensor. Tonal and spatial resolution, and their consequences. Color response. Digital photography. Maintaining chain-of-control with digital images. Digital video. Scanners. Taking good pictures. Presenting pictures in the courtroom. Summary. 2. Processing Digital Images: Noise in digital images. Noise reduction methods. Median filtering. Processing color images. Nonrandom noise. Adjusting contrast, brightness and gamma. Adjusting color balance. Adjusting size (magnification). Spatial distortions. Other applications. 3. Enhancement: Enhancement of detail. Sharpening. Sharpening color images. Other enhancement techniques. Less common processing methods. Color separation and filtering. Frequency space (Fourier processing). High and low pass filtering, band-pass filtering, and periodic noise. Deconvolution, or removal of system defects. Measuring image resolution. Resolution from the Fourier transform. Tonal (gray scale) resolution. Detecting compression. Detecting forgeries. Maintaining records. 4. Identification. The imaging chain. Surveillance video cameras. Recording and playback problems. Pixels and resolution elements. Noise and tonal resolution. Other shortcomings. Enhancement. Image restoration. Recognition and identification. Identification of faces. Identification by DNA. Misdirection and mistakes. 5. The Expert Witness: Working with counsel, judges and juries.
606			_aPROCESSAMENTO DE IMAGEM _9346081
606			_aDIGITALIZAÇÃO _9118786
606			_aFOTOGRAFIA _9243607
606			_aTÉCNICA DE INVESTIGAÇÃO _9344784
606			_aIDENTIFICAÇÃO DE PESSOAS _9343105
606			_aVIGILÂNCIA POLICIAL _9328926
700			_aRUSS _bJohn C. _9354642
955			_xCompra (€ 81,26)