Method and apparatus of trigger detection for image acquisition applied for high speed digital camera device

Abstract

The invention relates to a trigger detection method for image acquisition applied for a high speed digital camera device. The method comprises the following steps that: (1), a high speed camera device carries out real-time and high speed shooting on images and stores the images to a dynamic memory; (2), an image acquisition module sends all stored real-time images to a detection area for detection; if a trigger requirement is met, an internal trigger signal is generated and then go to a nest step; if not, go back to the step (2) and detection is carried out continuously; (3), after the internal trigger signal is received, a time t 0 is generated by the trigger signal and is utilized as a trigger time; it is determined that images are needed high speed images, wherein the images are collected between a delta t 1 time before the trigger time and a delta t 2 time after the trigger; and then the images are marked and then are stored into the dynamic memory; and the high speed shooting at this time is completed; (4), the high speed camera device continuously carries out image acquisition and processes of the step (2) and the step (3) are repeated; when the storage space is not enough, newly collected images automatically cover the images that have been collected and stored before; but, the high speed images that have unique marks are reserved and are not covered.

Description

technical field [0001] The invention relates to an image collection method for a high-speed digital camera device, in particular to a trigger detection method and device for image collection of a high-speed digital camera device. Background technique [0002] The so-called high-speed digital camera refers to a digital high-speed camera device that can shoot more than one hundred or even thousands of high-definition digital photos per second. Unlike ordinary digital cameras that can only shoot 30 or 60 VGA or one-megapixel photos per second, it is a camera technology that can shoot scenes at high speed. With the continuous advancement of technology, digital high-speed camera devices have gradually entered the application field. This type of device is used in shooting the moment of car collision, the opening process of car airbags, the momentary movement of sprinters crossing the line, and sports games. It plays an important role in many application fields such as the slow mo...

AI Technical Summary

Problems solved by technology

The disadvantage of external triggering is that additional accessories need to be added, so the cost is high and the operation is cumbersome

The accuracy of manual triggering is very low, generally not used

[0004] It can be seen that the above-mentioned existing high-speed digital camera device is complex in structure, difficult to use and maintain, and requires high professional knowledge for operation, so that its application is greatly restricted, especially in on-site shooting applications such as sports games. The shortcomings are particularly prominent, obviously there are inconveniences and defects, and further improvements are urgently needed

[0005] Since the key technologies and standards of high-speed digital camera devices have been provided by a few large companies for a long time, these companies have not made major changes to the structure and working methods of digital high-speed camera devices. In addition, ordinary digital cameras, such as commonly used DV Cameras, surveillance cameras, etc. are technical means adopted to achieve simple structure, convenient use and maintenance, and simple operation. The realization principle of key technologies is fundamentally different from that of high-speed digital camera devices, and cannot be used for reference.

For example, buttons are used to start and stop recording on ordinary cameras, which cannot be applied to high-speed camera devices

Therefore, the above problems have not been fundamentally resolved

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