Embedded high-space and high-spectral resolution video acquisition system

A video capture and video capture card technology, applied in CCTV systems, components of TV systems, TVs, etc., can solve problems such as limited application, high power consumption, and inconvenience in moving, to reduce power consumption and speed up execution Effects of speed, reduced development cycle and cost

Active Publication Date: 2016-02-17
NANJING UNIV
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Problems solved by technology

However, due to the use of an x86 computer as the processing core, it is inconvenient to move and consumes a lot of power, which limits its application

Method used

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  • Embedded high-space and high-spectral resolution video acquisition system
  • Embedded high-space and high-spectral resolution video acquisition system
  • Embedded high-space and high-spectral resolution video acquisition system

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Embodiment Construction

[0018] The core idea of ​​the present invention is: send the video frames collected by the front-end RGB and grayscale two-way cameras to the processor, and the RGB video frames obtained after synchronous alignment correction, some evenly spaced sparse pixels on it have both RGB pixels The values ​​also have multi-channel spectral response values. A fusion algorithm based on bilateral filtering is designed to transfer the spectral information of sparse pixels in RGB video frames to all pixels through bilateral filtering.

[0019] Such as figure 1 The embedded high-spatial high-spectral resolution video system shown is based on a multi-core processor, and is electrically connected to the processor chip with a FLASH chip, RAM chip, audio input / output interface, RS232UART interface, nimiPCIe interface, and SATA hard disk interface, HDMI interface and SD card interface, one USB3.0 and three USB2.0.

[0020] The above-mentioned FLASH chip is a single chip, using the eMMC4.51 proto...

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Abstract

The invention discloses an embedded high-space and high-spectral resolution video acquisition system. A video acquisition card of the system conveys the acquired RGB and gray scale videos to a memory, and a processor decodes the videos to separate RGB image signals and gray scale image signals and synchronously aligns and corrects the RGB image signals and the gray scale image signals; a principal component analysis method is used for reducing the spectral information dimension of pixel points so as to simplify the calculated amount; then a spectral propagation algorithm of bilateral filtering is executed on the processor in a multi-thread parallel mode so as to obtain spectral information of all pixel points of video frames; high-resolution spectral information is recovered by the principal component analysis method; data is stored in the memory, and acquisition, processing and analysis processes are displayed by display equipment; and finally, spectral data in the memory is transmitted to a remote host through the network. The system disclosed by the invention realizes integration of acquisition, processing, analysis and display processes of the videos, has the characteristics of miniaturization and integration, and is convenient to carry and use.

Description

technical field [0001] The invention relates to the field of video image processing, in particular to a video acquisition system that implements a bilateral filtering algorithm in parallel on an embedded platform to obtain high spatial resolution and high spectral resolution. Background technique [0002] The spectrum acquisition technology of traditional spectrometers mainly uses the scattering of light, diffraction and the band-pass characteristics of the spectral domain of the filter to convert a single beam of light into a single-spectrum light in space for collection. When the light is separated in the spectral dimension, the optical sensor is used to The light intensity of different spectral bands can be independently measured, and then the spectral information of the light can be collected. However, the optical structure of the spectrometer is complex, difficult to realize, expensive, bulky, inconvenient to move, and limited in application. [0003] Ordinary RGB came...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/18H04N5/225
Inventor 曹汛黄雷钢
Owner NANJING UNIV
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