Multiple exposure high dynamic range image capture

An image and range technology, applied in the field of image capture and processing systems, can solve problems such as not very effective, unsatisfactory reconstruction, inconvenient, etc.

Active Publication Date: 2013-03-27
QUALCOMM INC
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AI Technical Summary

Problems solved by technology

This solution is not very efficient or convenient and does not meet the requirement to reconstruct the HDR image on the camera's built-in display immediately after its capture

Method used

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  • Multiple exposure high dynamic range image capture
  • Multiple exposure high dynamic range image capture
  • Multiple exposure high dynamic range image capture

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Embodiment Construction

[0065] The invention will now be described more fully with reference to the accompanying drawings which form a part hereof and which show, by way of illustration, specific embodiments in which the invention may be practiced. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey to those skilled in the art. convey the scope of the invention. The invention can be implemented as a method or an apparatus, among others. Thus, the present invention may take the form of an entirely hardware embodiment in the form of modules or circuits, an entirely software embodiment in the form of software executing on a general purpose microprocessor, a special purpose microprocessor processor, a general purpose digital signal processor, or a special purpose digital signal processor , or in the form...

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Abstract

Techniques for creating a High Dynamic Range (HDR) image within a consumer grade digital camera from a series of images of a scene captured at different exposure levels, and displaying the HDR image on the camera's built-in display are provided. The approach employs mixing images of the series to incorporate both scene shadow and highlight details, and the removing of 'ghost' image artifacts appearing in the mixed HDR image resulting from movement in the scene over the time the series images are captured. The low computational resource utilization of the image mixing and ghost removal processing operations, along with the ability to commence image mixing and ghost removal prior to the acquisition of all series images, can significantly reduce the time required to generate and display a tone mapped HDR image.

Description

[0001] Cross References to Related Applications [0002] This application claims the priority of US Application Serial No. 13 / 091,068 filed on April 20, 2011 with the title of "Multiple Exposure High Dynamic Range Image Capture" according to 35U.S.C.119(e). All applications cited above are incorporated by reference in their entirety. technical field [0003] This application is concerned with the acquisition and processing of images showing the full range of gray scales present in a physical scene, which images are commonly referred to as "high dynamic range" or "HDR" images. More specifically, the present application relates to systems and methods for image capture and processing of HDR images in digital image capture devices, such as consumer digital cameras. Background technique [0004] Images captured by digital cameras are most commonly low dynamic range (LDR) images, where each image pixel includes a limited number of digital bits per color. The number of digital b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/243H04N9/04H04N9/77H04N5/355
CPCG06T2207/20208G06T2207/20012G06T2207/10144G06T7/2053G06T7/254
Inventor G·拉帕波特
Owner QUALCOMM INC
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