CN116528052A - Method and device for increasing exposure precision of light field camera under high-speed movement - Google Patents
Method and device for increasing exposure precision of light field camera under high-speed movement Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/73—Circuitry for compensating brightness variation in the scene by influencing the exposure time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/75—Circuitry for compensating brightness variation in the scene by influencing optical camera components
Abstract
The invention discloses a method and a device for increasing exposure precision of a light field camera under high-speed motion. Wherein the method comprises the following steps: obtaining moving target data, wherein the moving target data comprises: image data, motion parameters; generating a motion trail and a motion speed of the moving object according to the motion parameters; calculating the expected speed of the shutter according to the motion trail and the motion speed; and comparing the actual speed of the shutter with the expected speed of the shutter, and adjusting the speed of the shutter according to the comparison result. The invention solves the technical problems that when a light field camera in the prior art is used, when a shot object moves at a high speed, the exposure time of the light field camera is shortened due to the limitation of the shutter speed, and the exposure is insufficient, so that the quality and the precision of an image are influenced.
Description
Technical Field
The invention relates to the field of camera parameter optimization, in particular to a method and a device for increasing exposure precision of a light field camera under high-speed motion.
Background
Along with the continuous development of intelligent science and technology, intelligent equipment is increasingly used in life, work and study of people, and the quality of life of people is improved and the learning and working efficiency of people is increased by using intelligent science and technology means.
Currently, a light field camera is generally used as a video camera capable of capturing scene depth information and multiple angles at the same time, and has many advantages, such as capturing high-quality three-dimensional images, panoramic images suitable for naked eyes, and automatic focusing. However, when the light field camera in the prior art is used, when the photographed object moves at a high speed, the exposure time of the light field camera is also shortened due to the limitation of the shutter speed, resulting in underexposure, thereby affecting the quality and accuracy of the image. Therefore, a method for increasing the exposure accuracy of a light field camera under high-speed motion is needed.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the invention provides a method and a device for increasing the exposure precision of a light field camera under high-speed movement, which at least solve the technical problems that when the light field camera in the prior art is used, the exposure time of the light field camera is shortened due to the limitation of the shutter speed when a photographed object moves at a high speed, and the exposure is insufficient, so that the quality and the precision of an image are affected.
According to an aspect of an embodiment of the present invention, there is provided a method for increasing exposure accuracy of a light field camera under high-speed motion, including: obtaining moving target data, wherein the moving target data comprises: image data, motion parameters; generating a motion trail and a motion speed of the moving object according to the motion parameters; calculating the expected speed of the shutter according to the motion trail and the motion speed; and comparing the actual speed of the shutter with the expected speed of the shutter, and adjusting the speed of the shutter according to the comparison result.
Optionally, the calculating the shutter expected speed according to the motion trail and the motion speed includes: generating a shutter tracking path according to the motion trail and the image data; extracting timestamp information and motion instantaneous parameters in the motion parameters to generate the motion speed; calculating the shutter expected speed according to the shutter tracking path and the motion speed through the formula p=α [ log (s, 1/v (t)) ] wherein P is the shutter expected speed, α is the inverse ratio of the shutter operation rated speed to the image acquisition rate, s is the shutter tracking path, v is the motion speed, and t is the real-time motion timestamp.
Optionally, the comparing the actual shutter speed with the expected shutter speed, and adjusting the shutter speed according to the comparison result includes: acquiring the actual speed of the shutter; comparing the actual speed of the shutter with the expected speed of the shutter to obtain a comparison result, wherein the comparison result comprises: the difference between the actual shutter speed and the expected shutter speed is N, where N is a negative number or 0 or a positive number.
Optionally, after comparing the actual shutter speed with the expected shutter speed and adjusting the shutter speed according to the comparison result, the method further includes: and performing exposure balance and contrast correction on the adjusted image data.
According to another aspect of the embodiment of the present invention, there is also provided an apparatus for increasing exposure accuracy of a light field camera under high-speed motion, including: the device comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring moving target data, and the moving target data comprises: image data, motion parameters; the generation module is used for generating a motion trail and a motion speed of the moving object according to the motion parameters; the calculation module is used for calculating the expected shutter speed according to the motion trail and the motion speed; and the adjusting module is used for comparing the actual speed of the shutter with the expected speed of the shutter and adjusting the speed of the shutter according to the comparison result.
Optionally, the computing module includes: a generation unit configured to generate a shutter tracking path according to the motion trajectory and the image data; the extraction unit is used for extracting the timestamp information and the motion instantaneous parameter in the motion parameters and generating the motion speed; and a calculating unit, configured to calculate the shutter desired speed according to the shutter tracking path and the movement speed by a formula p=α×log (s, 1/v (t)), where P is the shutter desired speed, α is an inverse ratio of a shutter operation rated speed and an image acquisition rate, s is the shutter tracking path, v is the movement speed, and t is a real-time movement timestamp.
Optionally, the adjusting module includes: an acquisition unit configured to acquire the shutter actual speed; the comparison unit is used for comparing the actual shutter speed with the expected shutter speed to obtain a comparison result, wherein the comparison result comprises the following steps: the difference between the actual shutter speed and the expected shutter speed is N, where N is a negative number or 0 or a positive number.
Optionally, the apparatus further includes: and the correction module is used for carrying out exposure balance and contrast correction on the adjusted image data.
According to another aspect of the embodiment of the present invention, there is also provided a nonvolatile storage medium including a stored program, where the program when run controls a device in which the nonvolatile storage medium is located to perform a method of increasing exposure accuracy of a light field camera under high-speed motion.
According to another aspect of the embodiment of the present invention, there is also provided an electronic device including a processor and a memory; the memory stores computer readable instructions and the processor is configured to execute the computer readable instructions, where the computer readable instructions execute a method for increasing exposure accuracy of a light field camera in high speed motion.
In the embodiment of the invention, the moving object data is acquired, wherein the moving object data comprises: image data, motion parameters; generating a motion trail and a motion speed of the moving object according to the motion parameters; calculating the expected speed of the shutter according to the motion trail and the motion speed; the actual speed of the shutter is compared with the expected speed of the shutter, and the shutter speed is adjusted according to the comparison result, so that the technical problem that the quality and the accuracy of an image are affected due to the fact that the exposure time of the light field camera is shortened due to the limitation of the shutter speed when a shot object moves at a high speed in the prior art is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a flow chart of a method of increasing exposure accuracy of a light field camera at high motion according to an embodiment of the invention;
FIG. 2 is a block diagram of an apparatus for increasing exposure accuracy of a light field camera in high speed motion according to an embodiment of the present invention;
fig. 3 is a block diagram of a terminal device for performing the method according to the invention according to an embodiment of the invention;
fig. 4 is a memory unit for holding or carrying program code for implementing a method according to the invention, according to an embodiment of the invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In accordance with an embodiment of the present invention, there is provided a method embodiment of a method of increasing the accuracy of light field camera exposure in high speed motion, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order other than that illustrated herein.
Example 1
FIG. 1 is a flowchart of a method for increasing exposure accuracy of a light field camera at high motion according to an embodiment of the present invention, as shown in FIG. 1, the method comprising the steps of:
step S102, acquiring moving object data, where the moving object data includes: image data, motion parameters.
Specifically, in order to solve the technical problem that when a light field camera in the prior art is used and a photographed object moves at a high speed, due to the limitation of a shutter speed, the exposure time of the light field camera is also shortened, and the exposure is insufficient, so that the quality and the precision of an image are affected, when an imaging system is arranged on a scene where a high-speed moving object such as a sports field appears, moving object data needs to be acquired first, wherein the moving object data comprises: image data, motion parameters.
Step S104, generating a motion trail and a motion speed of the moving object according to the motion parameters.
Specifically, after the motion parameters and the image data of the original image are obtained in the embodiment of the invention, the motion track and the motion speed of the generated motion target need to be calculated according to the motion parameters, wherein the motion parameters comprise position data read by a gyroscope, coordinate data, time data and the like of the motion of the object, and the motion condition of the object in the image data is represented as the motion track by utilizing a track identification model to be output.
And step S106, calculating the expected shutter speed according to the motion trail and the motion speed.
Optionally, the calculating the shutter expected speed according to the motion trail and the motion speed includes: generating a shutter tracking path according to the motion trail and the image data; extracting timestamp information and motion instantaneous parameters in the motion parameters to generate the motion speed; calculating the shutter expected speed according to the shutter tracking path and the motion speed through the formula p=α [ log (s, 1/v (t)) ] wherein P is the shutter expected speed, α is the inverse ratio of the shutter operation rated speed to the image acquisition rate, s is the shutter tracking path, v is the motion speed, and t is the real-time motion timestamp.
And S108, comparing the actual speed of the shutter with the expected speed of the shutter, and adjusting the speed of the shutter according to the comparison result.
Optionally, the comparing the actual shutter speed with the expected shutter speed, and adjusting the shutter speed according to the comparison result includes: acquiring the actual speed of the shutter; comparing the actual speed of the shutter with the expected speed of the shutter to obtain a comparison result, wherein the comparison result comprises: the difference between the actual shutter speed and the expected shutter speed is N, where N is a negative number or 0 or a positive number.
Optionally, after comparing the actual shutter speed with the expected shutter speed and adjusting the shutter speed according to the comparison result, the method further includes: and performing exposure balance and contrast correction on the adjusted image data.
Through the embodiment, the technical problems that when a light field camera in the prior art is used and a shot object moves at a high speed, the exposure time of the light field camera is shortened due to the limitation of the shutter speed, the exposure is insufficient, and the quality and the precision of an image are affected are solved.
Example two
FIG. 2 is a block diagram of an apparatus for increasing exposure accuracy of a light field camera in high speed motion according to an embodiment of the present invention, as shown in FIG. 2, the apparatus comprising:
an obtaining module 20, configured to obtain moving object data, where the moving object data includes: image data, motion parameters.
Specifically, in order to solve the technical problem that when a light field camera in the prior art is used and a photographed object moves at a high speed, due to the limitation of a shutter speed, the exposure time of the light field camera is also shortened, and the exposure is insufficient, so that the quality and the precision of an image are affected, when an imaging system is arranged on a scene where a high-speed moving object such as a sports field appears, moving object data needs to be acquired first, wherein the moving object data comprises: image data, motion parameters.
The generating module 22 is configured to generate a motion trail and a motion speed of the moving object according to the motion parameters.
Specifically, after the motion parameters and the image data of the original image are obtained in the embodiment of the invention, the motion track and the motion speed of the generated motion target need to be calculated according to the motion parameters, wherein the motion parameters comprise position data read by a gyroscope, coordinate data, time data and the like of the motion of the object, and the motion condition of the object in the image data is represented as the motion track by utilizing a track identification model to be output.
A calculation module 24 for calculating a shutter desired speed according to the motion trajectory and the motion speed.
Optionally, the computing module includes: a generation unit configured to generate a shutter tracking path according to the motion trajectory and the image data; the extraction unit is used for extracting the timestamp information and the motion instantaneous parameter in the motion parameters and generating the motion speed; and a calculating unit, configured to calculate the shutter desired speed according to the shutter tracking path and the movement speed by a formula p=α×log (s, 1/v (t)), where P is the shutter desired speed, α is an inverse ratio of a shutter operation rated speed and an image acquisition rate, s is the shutter tracking path, v is the movement speed, and t is a real-time movement timestamp.
The adjustment module 26 is configured to compare the actual shutter speed with the expected shutter speed, and adjust the shutter speed according to the comparison result.
Optionally, the adjusting module includes: an acquisition unit configured to acquire the shutter actual speed; the comparison unit is used for comparing the actual shutter speed with the expected shutter speed to obtain a comparison result, wherein the comparison result comprises the following steps: the difference between the actual shutter speed and the expected shutter speed is N, where N is a negative number or 0 or a positive number.
Optionally, the apparatus further includes: and the correction module is used for carrying out exposure balance and contrast correction on the adjusted image data.
According to another aspect of the embodiment of the present invention, there is also provided a nonvolatile storage medium including a stored program, where the program when run controls a device in which the nonvolatile storage medium is located to perform a method of increasing exposure accuracy of a light field camera under high-speed motion.
Specifically, the method comprises the following steps: obtaining moving target data, wherein the moving target data comprises: image data, motion parameters; generating a motion trail and a motion speed of the moving object according to the motion parameters; calculating the expected speed of the shutter according to the motion trail and the motion speed; and comparing the actual speed of the shutter with the expected speed of the shutter, and adjusting the speed of the shutter according to the comparison result. Optionally, the calculating the shutter expected speed according to the motion trail and the motion speed includes: generating a shutter tracking path according to the motion trail and the image data; extracting timestamp information and motion instantaneous parameters in the motion parameters to generate the motion speed; calculating the shutter expected speed according to the shutter tracking path and the motion speed through the formula p=α [ log (s, 1/v (t)) ] wherein P is the shutter expected speed, α is the inverse ratio of the shutter operation rated speed to the image acquisition rate, s is the shutter tracking path, v is the motion speed, and t is the real-time motion timestamp. Optionally, the comparing the actual shutter speed with the expected shutter speed, and adjusting the shutter speed according to the comparison result includes: acquiring the actual speed of the shutter; comparing the actual speed of the shutter with the expected speed of the shutter to obtain a comparison result, wherein the comparison result comprises: the difference between the actual shutter speed and the expected shutter speed is N, where N is a negative number or 0 or a positive number. Optionally, after comparing the actual shutter speed with the expected shutter speed and adjusting the shutter speed according to the comparison result, the method further includes: and performing exposure balance and contrast correction on the adjusted image data.
According to another aspect of the embodiment of the present invention, there is also provided an electronic device including a processor and a memory; the memory stores computer readable instructions and the processor is configured to execute the computer readable instructions, where the computer readable instructions execute a method for increasing exposure accuracy of a light field camera in high speed motion.
Specifically, the method comprises the following steps: obtaining moving target data, wherein the moving target data comprises: image data, motion parameters; generating a motion trail and a motion speed of the moving object according to the motion parameters; calculating the expected speed of the shutter according to the motion trail and the motion speed; and comparing the actual speed of the shutter with the expected speed of the shutter, and adjusting the speed of the shutter according to the comparison result. Optionally, the calculating the shutter expected speed according to the motion trail and the motion speed includes: generating a shutter tracking path according to the motion trail and the image data; extracting timestamp information and motion instantaneous parameters in the motion parameters to generate the motion speed; calculating the shutter expected speed according to the shutter tracking path and the motion speed through the formula p=α [ log (s, 1/v (t)) ] wherein P is the shutter expected speed, α is the inverse ratio of the shutter operation rated speed to the image acquisition rate, s is the shutter tracking path, v is the motion speed, and t is the real-time motion timestamp. Optionally, the comparing the actual shutter speed with the expected shutter speed, and adjusting the shutter speed according to the comparison result includes: acquiring the actual speed of the shutter; comparing the actual speed of the shutter with the expected speed of the shutter to obtain a comparison result, wherein the comparison result comprises: the difference between the actual shutter speed and the expected shutter speed is N, where N is a negative number or 0 or a positive number. Optionally, after comparing the actual shutter speed with the expected shutter speed and adjusting the shutter speed according to the comparison result, the method further includes: and performing exposure balance and contrast correction on the adjusted image data.
The foregoing embodiment numbers of the present invention are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present invention, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, fig. 3 is a schematic hardware structure of a terminal device according to an embodiment of the present application. As shown in fig. 3, the terminal device may include an input device 30, a processor 31, an output device 32, a memory 33, and at least one communication bus 34. The communication bus 34 is used to enable communication connections between the elements. The memory 33 may comprise a high-speed RAM memory or may further comprise a non-volatile memory NVM, such as at least one magnetic disk memory, in which various programs may be stored for performing various processing functions and implementing the method steps of the present embodiment.
Alternatively, the processor 31 may be implemented as, for example, a central processing unit (Central Processing Unit, abbreviated as CPU), an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components, and the processor 31 is coupled to the input device 30 and the output device 32 through wired or wireless connections.
Alternatively, the input device 30 may include a variety of input devices, for example, may include at least one of a user-oriented user interface, a device-oriented device interface, a programmable interface of software, a camera, and a sensor. Optionally, the device interface facing the device may be a wired interface for data transmission between devices, or may be a hardware insertion interface (such as a USB interface, a serial port, etc.) for data transmission between devices; alternatively, the user-oriented user interface may be, for example, a user-oriented control key, a voice input device for receiving voice input, and a touch-sensitive device (e.g., a touch screen, a touch pad, etc. having touch-sensitive functionality) for receiving user touch input by a user; optionally, the programmable interface of the software may be, for example, an entry for a user to edit or modify a program, for example, an input pin interface or an input interface of a chip, etc.; optionally, the transceiver may be a radio frequency transceiver chip, a baseband processing chip, a transceiver antenna, etc. with a communication function. An audio input device such as a microphone may receive voice data. The output device 32 may include a display, audio, or the like.
In this embodiment, the processor of the terminal device may include functions for executing each module of the data processing apparatus in each device, and specific functions and technical effects may be referred to the above embodiments and are not described herein again.
Fig. 4 is a schematic hardware structure of a terminal device according to another embodiment of the present application. Fig. 4 is a specific embodiment of the implementation of fig. 3. As shown in fig. 4, the terminal device of the present embodiment includes a processor 41 and a memory 42.
The processor 41 executes the computer program code stored in the memory 42 to implement the methods of the above-described embodiments.
The memory 42 is configured to store various types of data to support operation at the terminal device. Examples of such data include instructions for any application or method operating on the terminal device, such as messages, pictures, video, etc. The memory 42 may include a random access memory (random access memory, simply referred to as RAM) and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.
Optionally, a processor 41 is provided in the processing assembly 40. The terminal device may further include: a communication component 43, a power supply component 44, a multimedia component 45, an audio component 46, an input/output interface 47 and/or a sensor component 48. The components and the like specifically included in the terminal device are set according to actual requirements, which are not limited in this embodiment.
The processing component 40 generally controls the overall operation of the terminal device. The processing component 40 may include one or more processors 41 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 40 may include one or more modules that facilitate interactions between the processing component 40 and other components. For example, processing component 40 may include a multimedia module to facilitate interaction between multimedia component 45 and processing component 40.
The power supply assembly 44 provides power to the various components of the terminal device. Power supply components 44 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for terminal devices.
The multimedia component 45 comprises a display screen between the terminal device and the user providing an output interface. In some embodiments, the display screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the display screen includes a touch panel, the display screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation.
The audio component 46 is configured to output and/or input audio signals. For example, the audio component 46 includes a Microphone (MIC) configured to receive external audio signals when the terminal device is in an operational mode, such as a speech recognition mode. The received audio signals may be further stored in the memory 42 or transmitted via the communication component 43. In some embodiments, audio assembly 46 further includes a speaker for outputting audio signals.
The input/output interface 47 provides an interface between the processing assembly 40 and peripheral interface modules, which may be click wheels, buttons, etc. These buttons may include, but are not limited to: volume button, start button and lock button.
The sensor assembly 48 includes one or more sensors for providing status assessment of various aspects for the terminal device. For example, the sensor assembly 48 may detect the open/closed state of the terminal device, the relative positioning of the assembly, the presence or absence of user contact with the terminal device. The sensor assembly 48 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact, including detecting the distance between the user and the terminal device. In some embodiments, the sensor assembly 48 may also include a camera or the like.
The communication component 43 is configured to facilitate communication between the terminal device and other devices in a wired or wireless manner. The terminal device may access a wireless network based on a communication standard, such as WiFi,2G or 3G, or a combination thereof. In one embodiment, the terminal device may include a SIM card slot, where the SIM card slot is used to insert a SIM card, so that the terminal device may log into a GPRS network, and establish communication with a server through the internet.
From the above, it will be appreciated that the communication component 43, the audio component 46, and the input/output interface 47, the sensor component 48 referred to in the embodiment of fig. 4 may be implemented as an input device in the embodiment of fig. 3.
In the several embodiments provided in the present application, it should be understood that the disclosed technology content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. A method for increasing exposure accuracy of a light field camera in high speed motion, comprising:
obtaining moving target data, wherein the moving target data comprises: image data, motion parameters;
generating a motion trail and a motion speed of the moving object according to the motion parameters;
calculating the expected speed of the shutter according to the motion trail and the motion speed;
and comparing the actual speed of the shutter with the expected speed of the shutter, and adjusting the speed of the shutter according to the comparison result.
2. The method of claim 1, wherein said calculating a shutter desired speed from said motion profile and motion speed comprises:
generating a shutter tracking path according to the motion trail and the image data;
extracting timestamp information and motion instantaneous parameters in the motion parameters to generate the motion speed;
tracking the path and the movement speed according to the shutter and passing through a formula
P＝α*[log(s,1/v(t))]
And calculating the shutter expected speed, wherein P is the shutter expected speed, alpha is the inverse ratio of the shutter working rated speed and the image acquisition speed, s is the shutter tracking path, v is the movement speed, and t is the real-time movement timestamp.
3. The method of claim 1, wherein comparing the actual shutter speed with the desired shutter speed and adjusting the shutter speed based on the comparison comprises:
acquiring the actual speed of the shutter;
comparing the actual speed of the shutter with the expected speed of the shutter to obtain a comparison result, wherein the comparison result comprises: the difference between the actual shutter speed and the expected shutter speed is N, where N is a negative number or 0 or a positive number.
4. The method according to claim 1, wherein after the comparing the shutter actual speed with the shutter desired speed and adjusting the shutter speed according to the comparison result, the method further comprises:
and performing exposure balance and contrast correction on the adjusted image data.
5. An apparatus for increasing exposure accuracy of a light field camera in high speed motion, comprising:
the device comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring moving target data, and the moving target data comprises: image data, motion parameters;
the generation module is used for generating a motion trail and a motion speed of the moving object according to the motion parameters;
the calculation module is used for calculating the expected shutter speed according to the motion trail and the motion speed;
and the adjusting module is used for comparing the actual speed of the shutter with the expected speed of the shutter and adjusting the speed of the shutter according to the comparison result.
6. The apparatus of claim 5, wherein the computing module comprises:
a generation unit configured to generate a shutter tracking path according to the motion trajectory and the image data;
the extraction unit is used for extracting the timestamp information and the motion instantaneous parameter in the motion parameters and generating the motion speed;
a calculation unit for tracking the path and the movement speed according to the shutter and passing through the formula
P＝α*[log(s,1/v(t))]
And calculating the shutter expected speed, wherein P is the shutter expected speed, alpha is the inverse ratio of the shutter working rated speed and the image acquisition speed, s is the shutter tracking path, v is the movement speed, and t is the real-time movement timestamp.
7. The apparatus of claim 5, wherein the adjustment module comprises:
an acquisition unit configured to acquire the shutter actual speed;
the comparison unit is used for comparing the actual shutter speed with the expected shutter speed to obtain a comparison result, wherein the comparison result comprises the following steps: the difference between the actual shutter speed and the expected shutter speed is N, where N is a negative number or 0 or a positive number.
8. The apparatus of claim 5, wherein the apparatus further comprises:
and the correction module is used for carrying out exposure balance and contrast correction on the adjusted image data.
9. A non-volatile storage medium, characterized in that the non-volatile storage medium comprises a stored program, wherein the program, when run, controls a device in which the non-volatile storage medium is located to perform the method of any one of claims 1 to 4.
10. An electronic device comprising a processor and a memory; the memory has stored therein computer readable instructions for executing the processor, wherein the computer readable instructions when executed perform the method of any of claims 1 to 4.
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