Image data aggregating high dynamic range imaging systems and associated methods

摘要

An image data aggregating high dynamic range imaging system includes an image sensor for generating N image data sets from an array of photodiodes, where N is an integer greater than one. The image sensor is adapted to generate each of the N image data sets with a different respective exposure time duration of the array of photodiodes. The system further includes an image data aggregating module for aggregating the N image data sets to obtain a virtual long exposure image data set.

主权项

1. A method for generating a virtual long exposure image data set, comprising:
generating N image data sets from an array of photodiodes, each of the N image data sets being generated with a different respective exposure time duration of the array of photodiodes, N being an integer greater than one; aggregating the N image data sets to obtain the virtual long exposure image data set, the step of aggregating the N image data sets including summing the N image data sets; generating N desired exposure times based at least in part on an average value of one of the N image data sets; generating N adjusted exposure times based at least in part on the N desired exposure times; and generating N subsequent image data sets from the array of photodiodes, the N subsequent image data sets being generated with respective exposure time durations of the array of photodiodes according to the N adjusted exposure times; the step of generating N adjusted exposure times including:
determining a first one of the N adjusted exposure times from a difference between a first one of the N desired exposure times and a second one of the N desired exposure times, anddetermining a second one of the N adjusted exposure times to be equal to the second one of the N desired exposure times.