Device and method for generating high-dynamic image in motion scene

Abstract

The invention discloses a device and a method for generating a high-dynamic image in a motion scene. A micro-polaroid array is integrally packaged on a focal plane of a focal plane detector, and a polarizer is additionally arranged in a light path in front of the micro-polaroid array to form four channels with two-stage polarization modulation and different optical transmittances, unsaturated pixel values with high channel optical transmittance are preferentially selected from corresponding spatial positions in the four channel images and are subjected to normalization processing to serve as pixel values of the synthetic image. The device and the method for generating the high-dynamic image in the motion scene have the advantages that the structure is compact, snapshot type imaging can be achieved, and the ghosting problem is effectively solved.

Description

technical field [0001] The invention relates to the technical field of photoelectric imaging, in particular to a device and method for generating high dynamic images in a moving scene. Background technique [0002] The photosensitive dynamic range of the camera's shooting element is much smaller than that of the human eye, so it is necessary to enhance the dynamic range of the captured image through post-processing, so that it can reflect a larger brightness range and details in dark parts, making it closer to reality Scenes. [0003] In outdoor high-dynamic scenes, in order to obtain high-dynamic photos, a common technical approach in the industry is a multi-frame image fusion scheme with different exposures. For example, in the scheme disclosed in the document (Patent Publication No.: CN 105163047A), multiple frames of images with different exposure settings are taken as input (usually three frames of short exposure, normal exposure, and long exposure), and then the three...

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Problems solved by technology

For example, the literature (authorized patent publication number: CN 103546673B) proposes a high dynamic range imaging method supplemented by motion vectors, extracting motion vectors of moving scenes in predetermined intervals at predetermined intervals, using motion vectors to perform motion compensation on photographed images, and using multiple The proposed method is difficult to accurately estimate the motion vector of the scene due to the diversity of the speed and direction of the target motion in the moving scene, so that the ghost image cannot be effectively eliminated.

The literature (authorized patent publication number: CN104702971B) proposes to use multiple cameras to optimize different exposure times respectively, and collect multiple frames of images at the same time to generate high dynamic images; because the method uses multiple cameras, the volume of the high dynamic imaging device is large and high cost

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