CN112929522A - Ultra-high-speed photographing system based on matrix lens and operation method thereof - Google Patents

Abstract

The invention discloses a matrix lens-based ultra-high-speed photography system and an operation method thereof, and particularly relates to the technical field of photography, wherein the system comprises a matrix camera lens system, a rolling shutter system and an image output system, and is characterized in that: the matrix camera system comprises a unit camera, the rolling shutter system comprises a unit CMOS sensor, and the matrix camera lens system is electrically connected with the rolling shutter system. The invention adds a plurality of unit cameras in a matrix queue mode, wherein each CMOS sensor corresponds to specific row data, the full-frame complete image can be simultaneously output through high-speed electronic signal synchronization, and finally the image is corrected, so that the better effect of shooting the image of an ultra-high speed moving object is realized.

Description

Ultra-high-speed photographing system based on matrix lens and operation method thereof

Technical Field

The invention relates to the technical field of line shooting, in particular to a matrix lens-based ultra-high-speed shooting system and an operation method thereof.

Background

A high-speed video camera is a device capable of capturing moving images with an exposure of less than 1/1000 seconds or a frame rate of more than 250 frames per second. It is used to record fast moving objects as photographic images onto a storage medium. After recording, the images stored on the medium may be played in slow motion. Early high-speed cameras recorded high-speed events using film, but were replaced by electronics that used fully charged-coupled device (CCD) or CMOS active pixel sensors, typically recording over 1000 frames per second onto DRAM, slowly replaying the scientific research actions that studied transients.

In the current market, the synchronous shooting technology for some ultrahigh-speed moving objects mainly depends on the setting of a global shutter in ultrahigh-speed shooting equipment, but the global shutter needs to use a mechanical shutter to block a non-exposure period, so that high-speed shooting needs to be provided with a matched high-speed shutter mechanical structure, and further development of high-speed shooting synchronization is restricted by a complex high-speed shutter system and expensive production cost.

Disclosure of Invention

In order to overcome the above-mentioned defects in the prior art, an embodiment of the present invention provides an ultra-high speed photographing system based on a matrix lens, and the technical problem to be solved by the present invention is: the market mainly relies on advanced complex mechanical shutter equipment for photographing of moving objects at ultra-high speed, which results in high threshold for ultra-high speed photography.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a hypervelocity photography system based on matrix camera lens, includes matrix camera lens system, rolls up curtain shutter system and image output system, the matrix camera system includes the unit camera, it includes unit CMOS sensor to roll up curtain shutter system, matrix camera lens system and roll up curtain shutter system electric connection, roll up curtain shutter system and image output system electric connection.

Preferably, the matrix camera lens system is composed of 30x30 unit cameras arranged in a matrix mode.

Preferably, the rolling shutter system is composed of a 30 × 30 unit CMOS sensor matrix arrangement.

An operation method of a super-high speed photographic system based on a matrix lens is characterized in that: the method comprises the following steps:

step S1: setting 30x30 as 900 unit cameras, wherein the distance between optical axes is less than 10 mm;

step S2: setting the position of each unit camera and parameters to be shot according to certain requirements, wherein the parameters comprise exposure time, frames per second and resolution;

step S3: after setting is finished, placing a correction target image at the position of the expected shooting target, obtaining 900 samples aiming at the standard target image by shooting the target image, and comparing each sample aiming at the target image to obtain image calibration;

step S4: setting a synchronous trigger, sequentially triggering the unit camera to start shooting, and following the time interval: and t is/f. f is the required frame rate of shooting;

step S5: after shooting is started, the nth data read by the nth camera of 900 unit cameras at each shooting time point is referred to as a frame in a joint manner;

step S6: carrying out displacement correction on frame data according to prestored digital correction information;

step S7: and circulating the steps of 3-4, and outputting the sequence frame.

The invention has the technical effects and advantages that:

according to the matrix lens-based ultra-high-speed photographing system, the matrix camera system is provided with 30x30 unit cameras in a matrix manner, so that the rolling shutter system is also provided with 30x30 unit CMOS sensors in a matrix manner; the rolling shutter system adopts the CMOS sensors, and reads each row of pixels without waiting for the whole frame to finish reading, thereby further maximizing the frame rate, improving the reading speed and ensuring that the object with ultrahigh-speed motion can be effectively shot under different illumination conditions.

Drawings

Fig. 1 is a schematic structural diagram of the operating principle of the camera system of the present invention.

In the figure: a matrix camera lens system; 2. a rolling shutter system; 3. an image output system; 5. a unit camera; 6. and a unit CMOS sensor.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution of an ultra-high speed photography system based on a matrix lens: including matrix camera lens system 1, roll up curtain shutter system 2 and image output system 3, matrix camera lens system 1 includes unit camera 5, rolls up curtain shutter system 2 and includes unit CMOS sensor 6, matrix camera lens system 1 and roll up curtain shutter system 2 electric connection, rolls up curtain shutter system 2 and image output system 3 electric connection.

The matrix imaging lens system 1 is composed of 30 × 30 unit cameras 5 arranged in a matrix form.

The rolling shutter system 2 consists of a matrix arrangement of 30x30 cell CMOS sensors 6.

An operation method of a super-high speed photographic system based on a matrix lens is characterized in that: the method comprises the following steps:

step S1: setting 30x30 as 900 unit cameras 5, wherein the distance between optical axes is less than 10 mm;

step S2: setting the position of each unit camera 5 and parameters to be shot according to certain requirements, wherein the parameters comprise exposure time, frames per second and resolution;

step S3: after setting is finished, placing a correction target image at the position of the expected shooting target, obtaining 900 samples aiming at the standard target image by shooting the target image, and comparing each sample aiming at the target image to obtain image calibration;

step S4: setting a synchronous trigger, sequentially triggering the unit camera 5 to start shooting, and following the time interval: t is 1/f. f is the required frame rate of shooting;

step S5: after the start of shooting, at each shooting time point, the nth data read by the nth camera of 900 unit cameras 5 is referred to as a frame;

step S6: carrying out displacement correction on frame data according to prestored digital correction information;

step S7: and circulating the steps of 3-4, and outputting the sequence frame.

The working principle is as follows: the matrix camera system 1 arranges 30x30 unit cameras 5 in a matrix form, so the rolling shutter system 2 also arranges 30x30 unit CMOS sensors 6 in a matrix form; a plurality of unit cameras 5 are arranged in a matrix mode, the nth sensor in the n sensors is ensured to read nth data through electronic shutter synchronous control, and finally, a full-line complete image is output simultaneously. And then, the image obtained by integrating one frame by one frame is stretched or translated in position through a correction grid, the image is corrected in position to obtain the final image of the ultra-high-speed moving object, the rolling shutter system 2 adopts a CMOS sensor 6, each row of pixels are read, the whole frame does not need to be waited to finish reading, the frame rate is further maximized, the reading speed is increased, and the ultra-high-speed moving object can be effectively shot under different illumination conditions.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims (4)

1. The utility model provides a hypervelocity photographic system based on matrix lens, includes matrix camera lens system (1), rolling shutter system (2) and image output system (3), its characterized in that: matrix camera system (1) is including unit camera (5), it includes unit CMOS sensor (6) to roll up curtain shutter system (2), matrix camera lens system (1) and roll up curtain shutter system (2) electric connection, roll up curtain shutter system (2) and image output system (3) electric connection.

2. A matrix-lens-based ultra-high-speed photographing system according to claim 1, wherein: the matrix camera lens system (1) is formed by arranging 30x30 unit cameras (5) in a matrix mode.

3. A matrix-lens-based ultra-high-speed photographing system according to claim 1, wherein: the rolling shutter system (2) is formed by arranging 30x30 unit CMOS sensors (6) in a matrix mode.

4. A method of operating a matrix-lens based ultra high speed photography system according to any one of claims 1 to 3, wherein: the method comprises the following steps:

step S1: setting 30x30 as 900 unit cameras (5), wherein the distance between optical axes is less than 10 mm;

step S2: setting the position of each unit camera (5) and parameters to be shot according to certain requirements, wherein the parameters comprise exposure time, frames per second and resolution;

step S3: after setting is finished, placing a correction target image at the position of the expected shooting target, obtaining 900 samples aiming at the standard target image by shooting the target image, and comparing each sample aiming at the target image to obtain image calibration;

step S4: setting a synchronous trigger, sequentially triggering the unit camera (5) to start shooting, and following the time interval: t is 1/f. f is the required frame rate of shooting;

step S5: after the start of shooting, at each shooting time point, the nth data read by the nth camera of 900 unit cameras 5 is referred to as a frame;

step S6: carrying out displacement correction on frame data according to prestored digital correction information;

step S7: and circulating the steps of 3-4, and outputting the sequence frame.

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