Method for improved digital video image quality

摘要

A method of producing a digital video with reduced motion blur or increased brightness, including capturing a digital video using an exposure time that reduces image blur; selecting a first series of sequential images from the digital video capture; combining pixel values of said images to produce a first intermediate image that is brighter than each of the selected sequential images; choosing and processing a reference image to create a second intermediate image that is less blurry than the first intermediate image; identifying moving regions among the selected sequential images; replacing pixel values of moving regions in the first intermediate image with corresponding pixel values from the second intermediate image to produce a first digital video image having reduced motion blur or increased brightness; and repeating these steps for a second series of sequential images that includes at least one image from the first series of sequential images.

主权项

1. A method for providing a digital video of a scene with at least one of reduced motion blur or increased brightness, using a digital image processor to provide operations, comprising:
determining for a digital video capture an exposure time for each digital video image based on brightness measurements of the scene; capturing each digital video image with a reduced exposure time that is 1/n of the determined exposure time for the digital video image, wherein n is greater than 1; selecting a first series of at least x sequential images within the digital video capture, wherein x is greater than 1, wherein x is selected based on scene brightness, and wherein x is changed during the video capture based on detected scene brightness; combining pixel values of the selected first series of sequential images to produce a first intermediate image that is brighter than each of the selected sequential images; assigning one of the selected sequential images as a reference image, and processing the reference image to create a second intermediate image which is brighter than the reference image and which has less motion blur than the first intermediate image; identifying moving regions among the selected sequential images; replacing the pixel values of the moving regions in the first intermediate image with pixel values from corresponding regions from the second intermediate image to thereby produce a first digital video image having at least one of reduced motion blur or increased brightness; repeating steps of selecting, combining, identifying, and replacing for a second series of sequential images that includes at least one image from the first series of sequential images to produce a second digital video image having at least one of reduced motion blur or increased brightness; and storing or transmitting the video including the first and second digital video images with at least one of reduced motion blur or increased brightness.