Multi-exposure video

摘要

Certain cameras and systems described herein produce enhanced dynamic range still or video images. The images can also have controlled or reduced motion artifacts. Moreover, the cameras and systems in some cases allow the dynamic range and/or motion artifacts to be tuned to achieve a desired cinematic effect.

主权项

1. A method of obtaining video image data using a digital image sensor, the method comprising:
for successive frames of video image data, controlling a digital image sensor to begin capturing a first image at a first exposure level according to a rolling shutter technique in which successive groups of pixels of the image sensor are exposed and read out in successive, overlapping time slots; and subsequent to a starting group of the groups of pixels completing exposure for the first image, and prior to an ending group of the groups of pixels completing exposure for the first image, controlling the digital image sensor to begin capturing a second image at a second exposure level different than the first exposure level according to the rolling shutter technique, wherein said controlling the digital image sensor to begin capturing the second image includes allowing each respective group of pixels to complete capturing the light corresponding to the first image prior to controlling that respective group of pixels to begin capturing the light corresponding to the second image, and wherein the amount of time that elapses from between completion of readout of digital measurements corresponding to the starting group for the first image to the beginning of readout of digital measurements corresponding to the starting group for second image is greater than the amount of time that elapses from between completing readout of the digital measurements corresponding to the starting group for the first image to substantially completing readout of digital measurements for the entire first image.