Title :
Flexible Wide Dynamic Range (WDR) processing support in image signal processor (ISP)
Author :
Mody, Mihir ; Nandan, Niraj ; Allu, Hetul Sanghvi Rajasekhar ; Sagar, Rajat
Author_Institution :
Automotive Processor Bus., Texas Instrum. Inc., Bangalore, India
Abstract :
Wide Dynamic Range (WDR) enables capturing images with extreme light variations within them. Typically, image sensor manufactures enable WDR using their proprietary techniques consisting of actual physical capture method as well as transmission format. This poses extreme challenge for interfacing Image Signal Processor (ISP) as complexity grows significantly to support customized processing & data flow for each WDR techniques. This paper summarizes various WDR techniques from multiple sensor manufactures from ISP standpoint and proposes a flexible architecture to support WDR data flows & processing using software and hardware. The given solution can be mapped to silicon area savings by a factor of N (number of WDR techniques to be supported) & 33% for rest of ISP with additional external memory bandwidth enabling universal WDR receiver.
Keywords :
elemental semiconductors; image processing; image sensors; silicon; ISP; Si; WDR rrocessing; data flow; external memory bandwidth; extreme light variations; flexible architecture; flexible wide dynamic range rrocessing; image sensor manufactures; image signal processor; multiple sensor manufactures; physical capture method; silicon area savings; transmission format; universal WDR receiver; Colored noise; Computer architecture; Dynamic range; Image color analysis; Image sensors; Sensitivity;
Conference_Titel :
Consumer Electronics (ICCE), 2015 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4799-7542-6
DOI :
10.1109/ICCE.2015.7066488
