METHOD AND APPARATUS FOR IMPLEMENTING A DIGITAL GRADUATED FILTER FOR AN IMAGING APPARATUS

• US 20180070012A1
• Filed: 11/13/2017
• Published: 03/08/2018
• Est. Priority Date: 03/25/2004
• Status: Active Grant

• Current Assignee: Clear Imaging Research, LLC
• Original Assignee: Fatih M. Ozluturk
• Inventors: Ozluturk, Fatih M.
• Granted Patent: US 10,341,566 B2
• Time in Patent Office: Days
• CPC Class Codes: G06T 2207/10016 Video; Image sequence
• CPC Class Codes: G06T 2207/20201 Motion blur correction
• CPC Class Codes: G06T 5/73 Deblurring; Sharpening
• CPC Class Codes: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations
• CPC Class Codes: H04N 23/6811 based on the image signal
• CPC Class Codes: H04N 23/6812 based on additional sensors, e.g. acceleration sensors
• CPC Class Codes: H04N 23/683 performed by a processor, e.g. controlling the readout of an image memory
• CPC Class Codes: H04N 23/6845 by combination of a plurality of images sequentially taken
• CPC Class Codes: H04N 23/687 by shifting the lens or sensor position
• CPC Class Codes: H04N 23/741 by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors

Abstract

A digital graduated filter is implemented in an imaging device by combining multiple images of the subject wherein the combining may include combining different numbers of images for highlights and for shadows of the subject. The imaging device may present a user with a set of pre-defined graduated filter configurations to choose from. A user may also specify the direction of graduation and strength of graduation in a viewfinder. In an alternative implementation, combining may include scaling of pixels being added instead of varying the number of images being combined. In an alternative implementation, the combining of multiple images may include combining a different number of images for highlights of the subject than for shadows of subject.

Claims

1. A method of capturing image of a high-dynamic range subject, the method including:

capturing multiple images of the subject in an imaging device, each image comprising portions of highlights and portions of shadows;

combining the multiple images to form a final image, wherein the combining includes combining different number of the images to form highlights than the number of the images to form the shadows; and

storing the final image.