Method for capturing images by using multiple cameras on embedded platform

Abstract

The invention discloses a method for capturing images by using multiple cameras on an embedded platform. In the method, an embedded host in which a high-speed USB OTG (Universal Serial Bus On-The-Go) controller is arranged is adopted. The embedded host is used for capturing images by the following steps: (A1) in a USB high-speed mode of the high-speed USB OTG controller, the embedded host transmits SOF (Start Of Frame) synchronizing signals to external camera equipment connected with a USB interface at certain time intervals and receives data packets returned by the external camera equipment; and (A2) after receiving the data packets, the embedded host resolves the data packets, extracts effective YUV (Luma and Chroma) data, stores the YUV data into frames for caching, judges whether a frame is completely collected or not, if so, refreshing displaying, otherwise continuing to receive a next data packet. According to the method, the problem that images cannot be captured simultaneously by using multiple cameras because hardware interfaces on the embedded platform are limited is mainly solved, the expandability of a system is improved without using too many hardware resources, the function of an embedded host equipment system is stronger, and a user can select and use cameras more flexibly according to personal practical demands.

Description

Technical field [0001] The invention relates to a method for capturing images using multiple cameras on an embedded platform. Background technique [0002] As a video input device, the camera is widely used in video conferencing, telemedicine, and real-time monitoring. In recent years, with the development of Internet technology and the continuous increase of network speed, coupled with the maturity of charge-coupled device (CCD) / complementary metal oxide semiconductor component (CMOS) imaging device technology and its extensive use in camera manufacturing, this Makes its price drop acceptable to ordinary people. Ordinary users can talk and communicate with each other on the Internet through cameras. [0003] At present, there are two main solutions for video transmission with cameras on the market: [0004] 1. Image acquisition scheme based on parallel interface; [0005] 2. PC Camera solution based on USB interface, namely UVC interface solution; [0006] The two solutions are int...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a method for capturing images using multiple cameras on an embedded platform. This method mainly solves the problem that the hardware interface on the embedded platform is limited and cannot use multiple cameras to capture images at the same time. Excessive hardware resources have improved the scalability of the system, making the embedded host device system more powerful, and users can choose and use cameras more flexibly according to their actual needs.

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