WO2020147028A1 - 一种拍摄方法及相关设备 - Google Patents
一种拍摄方法及相关设备 Download PDFInfo
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- WO2020147028A1 WO2020147028A1 PCT/CN2019/071899 CN2019071899W WO2020147028A1 WO 2020147028 A1 WO2020147028 A1 WO 2020147028A1 CN 2019071899 W CN2019071899 W CN 2019071899W WO 2020147028 A1 WO2020147028 A1 WO 2020147028A1
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- WIPO (PCT)
- Prior art keywords
- exposure
- shooting
- zoom
- mode
- mobile platform
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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
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
Definitions
- the present invention relates to the field of image technology, in particular to a shooting method and related equipment.
- Explosive shooting refers to It uses the variability of the focal length of the camera lens to rapidly change the focal length at the moment the shutter is pressed, making the focal length larger or smaller, so that the image produces strong explosive radiation lines that spread from the center to the surroundings.
- the current explosive shooting has the problem that the exposure and the zoom are not synchronized when the zoom device is manually adjusted, which affects the effect of the captured explosive image. Therefore, how to improve the quality of explosive images has become a hot research issue.
- the embodiments of the present invention provide a shooting method and related equipment, which can improve the quality of explosive images.
- an embodiment of the present invention provides a shooting method, including:
- the shooting device is controlled to simultaneously perform exposure and zooming to obtain an explosive image.
- an embodiment of the present invention provides a mobile platform, including: a memory, a processor, and a photographing device:
- the memory is used to store program code
- the processor is configured to call the program code, and when the program code is executed, it is configured to perform the following operations:
- the photographing device is used for simultaneously performing exposure and zooming to obtain an explosive image when the photographing instruction is received.
- an embodiment of the present invention provides a computer-readable storage medium, the computer-readable storage medium stores computer program instructions, and when executed, the computer program instructions are used to implement the shooting described in the first aspect. method.
- the mobile platform controls the shooting device mounted on the mobile platform to perform exposure and zooming at the same time based on the explosive shooting instruction to obtain an explosive image. Because the mobile platform can control the shooting The exposure and zoom of the device are carried out at the same time, which ensures the synchronization of the exposure and the zoom during explosive shooting, avoids the impact of the unsynchronized exposure and zoom on the quality of the explosive image, and improves the quality of the explosive image. In addition, the user does not need to manually adjust the zoom, but only needs to send the explosive shooting instruction to get the explosive shooting image, which improves the user experience.
- FIG. 1 is a schematic diagram of an explosive image provided by an embodiment of the present invention
- FIG. 2 is an application scene diagram of explosive shooting according to an embodiment of the present invention
- FIG. 3 is a schematic flowchart of a shooting method provided by an embodiment of the present invention.
- FIG. 4 is a schematic flowchart of another shooting method according to an embodiment of the present invention.
- FIG. 5 is a schematic flowchart of another shooting method provided by an embodiment of the present invention.
- FIG. 6 is a diagram of the relationship between a zoom mode and the exposure time of each exposure provided by an embodiment of the present invention.
- Figure 7 is a schematic diagram of a vertebral body model provided by an embodiment of the present invention.
- FIG. 8 is a schematic structural diagram of a mobile platform provided by an embodiment of the present invention.
- FIG. 9 is a schematic structural diagram of a photographing device provided by an embodiment of the present invention.
- Explosive shooting is a shooting method based on the focal length variability and exposure controllability of the shooting device.
- the focal length variability of the shooting device depends on the zoom lens of the shooting device. Adjusting the zoom lens of the shooting device can change the shooting.
- the focus state of the device; the exposure controllability of the camera means that the exposure time can be controlled by the shutter of the camera.
- explosive shooting refers to the rapid push and pull of the zoom lens at the moment the shutter of the camera is pressed to increase or decrease the focal length, so that the screen produces strong explosive radiation lines that spread from the center to the surroundings, as shown in Figure 1. Show.
- Common explosive shooting is to manually adjust the camera to zoom and exposure. Specifically, during the shooting process, the zoom ring of the shooting device is manually rotated to adjust the focal length change of the shooting device, and the exposure of the shooting device is controlled by the shutter of the shooting device. However, manually rotating the zoom ring will cause the camera to shake, which will affect the quality of the explosive image captured.
- an embodiment of the present invention provides a shooting method, which can be applied to a mobile platform with a camera mounted on the mobile platform, and the mobile platform can control the camera to perform explosive shooting.
- the mobile platform receives a shooting instruction for explosive shooting, it controls the camera on the mobile platform to perform exposure and zoom at the same time to obtain an explosive image, because the mobile platform can control the exposure and zoom of the camera at the same time .
- the shooting method provided by the embodiment of the present invention, the user does not need to manually adjust the zoom, but only needs to send an explosive shooting instruction to obtain an explosive shooting image, which improves user experience.
- the mobile platform controls the shooting device to perform exposure and zooming during explosive shooting at the same time, which avoids the impact of the shake of the shooting device on the explosive image quality caused by manually adjusting the exposure and zoom .
- the shooting device is mounted on a mobile platform for explosive shooting, realizing multi-angle shooting.
- FIG. 2 is an application scene diagram of explosive shooting provided by an embodiment of the present invention.
- the mobile platform is a drone 201
- the drone is mounted with a camera 202
- the drone 201 receives
- the explosive shooting instruction can be sent by the user through the terminal control device matched with the drone 201.
- the terminal control device matched with the drone is the remote control 203
- the shooting target is the street night scene 204.
- the user can control the drone 201 to fly through the remote control 203.
- the user can control the drone 201 to be in suspension through the remote control 203.
- the drone 201 receives the shooting command for explosive shooting, it controls the shooting device 202 to perform exposure and zoom at the same time based on the shooting command to obtain the explosion. ⁇ 205.
- the use of the shooting device mounted on the drone for explosive shooting realizes multi-view shooting and expands the scope of application of explosive shooting, and the embodiment of the present invention can control the shooting device to perform zooming and exposure simultaneously, improving To improve the quality of the explosive images obtained.
- the user does not need to manually adjust the zoom, but only needs to send the explosive shooting instruction to get the explosive shooting image, which improves the user experience.
- An embodiment of the present invention provides a shooting method as shown in FIG. 3, which can be applied to a mobile platform, and the mobile platform is mounted with a shooting device, and the shooting device can perform explosive shooting.
- the shooting method described in FIG. 3 may be executed by a mobile platform, and specifically may be executed by a processor of the mobile platform.
- the mobile platform may include any one of a drone, an unmanned vehicle, a mobile robot, and a camera, as shown in FIG. 3
- the shooting method can include the following steps:
- Step S301 The mobile platform receives a shooting instruction for explosive shooting.
- the mobile platform can be equipped with a matching terminal control device such as a remote control, or a mobile control system can be configured in the mobile platform .
- a matching terminal control device such as a remote control
- the user can monitor the movement status of the mobile platform through the terminal control device, and control the movement of the mobile platform and control the execution of the mobile platform through the terminal control device.
- Certain operations For example, suppose that the mobile platform is a drone, and the terminal control device that matches the drone is a remote control. The user can use the remote control to realize the drone tracking flight and obstacle avoidance functions.
- a mobile control system if a mobile control system is configured in the mobile platform, the mobile control system can monitor the movement status of the mobile platform, so as to realize the movement control of the mobile platform.
- the shooting instruction is an instruction used to instruct the mobile platform to control the shooting device to shoot the shooting target.
- the shooting instruction may be sent by a terminal control device matching the mobile platform.
- the shooting instruction may also be generated and sent by the mobile control system of the mobile platform.
- the manner of receiving the shooting instruction sent by the terminal control device matching the mobile platform may be: when the terminal controls When the device acquires the operation for explosive shooting, it can generate a shooting instruction for explosive shooting according to the operation, and send the shooting instruction to the mobile platform; if the shooting instruction is the movement of the mobile platform
- the method of receiving the shooting instruction sent by the mobile control system of the mobile platform may be as follows: when the mobile platform starts to move, set a moving route for the mobile platform, and set the moving route in the moving route.
- the shooting point for explosive shooting; after the setting is successful, the mobile control system can control the mobile platform to move according to the set movement route.
- the mobile platform is detected to move to the shooting point, it generates and sends a shooting instruction for explosive shooting To the mobile platform.
- Step S302 Based on the shooting instruction, the shooting device is controlled to perform exposure and zooming at the same time to obtain an explosive image.
- the explosive image is an image obtained by quickly controlling the focal length change of the shooting device while exposing.
- the zoom and exposure of the shooting device can be controlled to be strictly synchronized, which improves the quality of the explosive image obtained by shooting.
- the camera is equipped with a zoom device and an exposure device
- the mobile platform controls the camera to perform exposure and zoom at the same time based on the shooting instructions, which essentially controls the zoom device and exposure device of the camera when the camera is shooting.
- the exposure state and the focus state make the zoom time and the exposure time the same, thereby obtaining high-quality explosive images.
- the mobile platform in order to obtain high-quality explosive images while saving the power consumption of the mobile platform, can also determine the current operating state of the mobile platform before controlling the shooting device to perform exposure and zooming at the same time based on the shooting instructions. Whether it meets the preset state condition, specifically, before the mobile platform controls the shooting device to perform exposure and zooming based on the shooting instruction: obtain the operating state of the mobile platform; if the operating state of the mobile platform meets the preset state condition , The step of controlling the photographing device to simultaneously perform exposure and zooming based on the photographing instruction is executed.
- the preset state condition includes that the mobile platform is in a hovering state.
- the camera is mounted on the mobile platform, and the camera moves along with the movement of the mobile platform.
- the embodiment of the present invention ensures that the camera is in a stable state for shooting by ensuring that the mobile platform is in a hovering state. While saving the power consumption of the mobile platform, high-quality explosive images are obtained.
- the mobile platform may ignore the shooting instruction received this time, or the mobile platform may generate hovering prompt information,
- the hovering prompt information is used to prompt the user or the mobile control system to hover the mobile platform.
- an explosive image can be obtained. Further, the mobile platform can output the explosive image for The user can view or use, and at the same time, store the explosive image in the mobile platform.
- the mobile The platform also needs to determine whether the shooting is successful: if the shooting is successful, the mobile platform outputs the explosive image; if the shooting fails, the mobile platform may output a shooting failure prompt message.
- the shooting failure prompt information may include the reason for the shooting failure. In this way, it is helpful for the user to adjust the shooting of the mobile platform according to the reason for the shooting failure, so that the mobile platform can perform shooting again. The shooting is successful, as shown in Figure 4.
- the shooting there are many factors that determine whether the shooting is successful, such as whether the mobile platform changes from a hovering state to a running state during the shooting, or whether the shooting device performs exposure and zooming at the same time during the shooting. If the mobile platform always keeps the hovering state during the shooting, or the shooting device performs exposure and zooming at the same time during the shooting, it can be determined that the shooting is successful; otherwise, it can be determined that the shooting is unsuccessful.
- the foregoing are only two factors that affect the success of shooting provided by the embodiments of the present invention. In the actual shooting process, there may also be other factors that affect the success of shooting, which are not described in the embodiments of the present invention.
- the mobile platform controls the shooting device mounted on the mobile platform to perform exposure and zooming at the same time based on the explosive shooting instruction to obtain an explosive image. Because the mobile platform can control the exposure and zooming of the shooting device at the same time, it ensures the synchronization of the exposure and zoom during explosive shooting, avoids the impact of the unsynchronized exposure and zoom on the quality of the explosive image, and improves the quality of the explosive image.
- explosive shooting is carried out with a shooting device mounted on a mobile platform, which meets the needs of multi-view shooting.
- the user does not need to manually adjust the zoom, but only needs to send the explosive shooting instruction to get the explosive shooting image, which improves the user experience.
- FIG. 5 is a schematic flowchart of another shooting method provided by an embodiment of the present invention.
- the shooting method described in FIG. 5 may include the following steps:
- Step S501 Receive a shooting instruction for explosive shooting.
- step S501 for some feasible implementation manners included in step S501, reference may be made to the description of the corresponding part in the embodiment shown in FIG. 3, which will not be repeated here.
- Step S502 Acquire the zoom mode included in the shooting instruction, and determine the exposure mode when the shooting device performs exposure and zooming at the same time based on the zoom mode.
- the shooting instruction received in step S501 may carry a zoom mode
- the zoom mode refers to the focal length change mode of the shooting device
- the zoom mode may include constant speed zoom and variable speed zoom
- the constant speed zoom means that during the zooming process, the photographing device zooms at a constant speed
- the variable speed zoom means that during the zooming process, the photographing device zooms at a changing speed
- the variable speed zoom includes accelerated zooming.
- the acceleration zoom refers to the zooming speed of the photographing device from slow to fast during the zooming process
- the decelerating zooming refers to the zooming speed of the photographing device from fast to slow during the zooming process .
- the shooting device In order to obtain high-quality explosive images in the embodiments of the present invention, it is necessary to control the shooting device to perform exposure and zooming at the same time when shooting. Therefore, when the zoom mode is determined, the mobile platform needs to determine the The exposure mode matched with the zoom mode can realize the simultaneous exposure and zooming of the camera.
- the determining the exposure mode when the photographing device performs exposure and zooming at the same time based on the zoom mode includes: collecting current brightness information of the environment where the shooting target is located; interpreting the zoom corresponding to the zoom mode Parameters, the zoom parameter includes a zoom time and a zoom range; the exposure mode is determined based on the zoom parameter and the current brightness information.
- the photographing target refers to an object photographed by the photographing device.
- the zoom time refers to the time it takes for the focal length of the photographing device to change
- the zoom range refers to the change in the focal length of the photographing device from the A state to the B state.
- the example zoom time may be 1s, and the zoom The range can be 23mm-55mm.
- the mobile platform can collect the current brightness information of the environment where the shooting target is located through the light sensing module on the shooting device. After collecting the current brightness information of the environment where the shooting target is located, the mobile platform The platform may determine the exposure mode based on the zoom parameter and the current brightness information.
- the exposure mode includes a long exposure mode and a short exposure mode.
- the long exposure mode refers to keeping the exposure during the zooming process.
- the short exposure mode refers to multiple exposures during the zoom process, each exposure time is shorter.
- the long exposure mode is suitable for situations where the brightness of the shooting scene is not very high during zooming
- the short exposure mode is suitable for situations where the brightness of the shooting scene shows high dynamic changes during the zooming process. It can be seen that the exposure mode is related to the zoom time and the current brightness information.
- the determining the exposure mode based on the zoom parameter and the current brightness information includes: determining, based on the zoom time and the current brightness information, that in the long exposure mode, the photographing device Whether it meets the overexposure condition; if the photographing device meets the overexposure condition, the exposure mode is determined to be the short exposure mode; if the photographing device does not meet the overexposure condition, the exposure mode is determined For long exposure.
- the shooting device may first control the shooting device to enter the shooting preview mode before shooting, and in the shooting preview mode, the shooting is performed by the above method.
- the device selects the appropriate exposure mode.
- overexposure may mean that the photographing device receives too much light (that is, the amount of exposure is too large) during the exposure time, thereby causing the photographed image to turn white.
- the exposure amount refers to how much light can be received by the photographing device within the exposure time.
- the amount of exposure is controlled by three factors: the sensitivity ISO, exposure time, and aperture of the camera.
- the aperture of the camera mounted on the mobile platform is fixed.
- the exposure time and the zoom time are set to be the same. Therefore, the embodiment of the present invention assumes The aperture is fixed and the exposure time is equal to the zoom time. Once the zoom time is determined, the exposure time is also determined. At this time, the exposure of the camera is controlled by the sensitivity ISO, which refers to the pair of photosensitive elements of the camera. Light receiving ability.
- the shooting device meets the overexposure condition refers to: taking the zoom time as the exposure time and when the aperture of the shooting device is fixed, if the brightness indicated by the current brightness information is used, the shooting The ISO value of the device is set to the minimum, and the exposure of the camera is still too high (or still overexposed).
- the aperture is fixed, if any adjustment of the ISO value of the camera during the exposure time will cause the camera to be overexposed, it is determined that the camera meets the conditions for overexposure. It is understandable that if a suitable ISO value can be found within the exposure time to allow the photographing device to expose normally, it is determined that the photographing device does not meet the overexposure condition.
- the shooting device does not meet the overexposure condition, it means that the long exposure mode can be selected under the zoom time and the current brightness of the shooting target. If the shooting device meets the overexposure condition, it means that the The zoom time and the current brightness of the shooting target are not suitable for selecting the long exposure mode, and the exposure mode of the shooting device is determined to be the short exposure mode.
- Step S503 controlling the photographing device to simultaneously perform exposure and zooming based on the exposure mode and the zoom mode to obtain an explosive image.
- the mobile platform controls the photographing device to simultaneously perform exposure and zoom based on the exposure mode and the zoom mode to obtain an explosive image.
- controlling the shooting device to perform exposure and zooming simultaneously based on the zoom mode and the exposure mode refers to configuring the zoom parameters in the zoom mode and the exposure parameters in the exposure mode to the shooting device, and then controlling the shooting The device changes the focus state and exposure state of the shooting device during shooting according to the configured zoom parameters and exposure parameters. Therefore, when controlling the photographing device to perform exposure and zooming simultaneously based on the exposure mode and the zoom mode, it is necessary to determine the exposure parameters in the exposure mode and the zoom parameters in the zoom mode.
- controlling the photographing device to simultaneously perform exposure and zooming based on the zoom mode and the exposure mode includes: determining the exposure parameter based on the current environmental brightness information of the photographing target, the zoom parameter, and the exposure mode;
- the camera is controlled to simultaneously perform exposure and zoom based on the zoom parameter and the exposure parameter.
- the zoom parameters may include zoom time and zoom range.
- the zoom mode included in the shooting instruction received by the mobile platform is selected by the user, and the user sets the zoom time and zoom range while selecting the zoom mode, so the mobile platform only needs Interpret the zoom mode to get the zoom parameters.
- the exposure parameter may include the number of exposures, the exposure time corresponding to each exposure, and the exposure value corresponding to each exposure.
- the number of exposures in the exposure parameter is equal to 1
- the exposure time corresponding to each exposure is equal to the zoom time.
- the number of exposures in the exposure parameter is at least two, and the number of exposures is determined according to current environmental brightness information.
- the zoom parameters at this time may include the number of zooms, the zoom range of each zoom, and the zoom speed of each zoom.
- the range of each zoom can be set to be the same.
- the zoom range is from A to B and the number of zooms is 3, then the range change of each zoom is (BA)/3, the first The second zoom range is from A to A+(BA)/3, the second zoom range is from A+(BA)/3 to A+2*A+(BA)/3, the third zoom range is from A +2*A+(BA)/3 to B.
- the number of zooms and the number of exposures are set to be the same.
- the zoom speed of each zoom is determined by the zoom mode: if the zoom mode is constant speed zoom, the zoom speed of each zoom Set to constant; if the zoom mode is accelerated zoom, the zoom speed of each zoom will gradually increase; if the zoom mode is decelerated zoom, the zoom speed of each zoom will gradually decrease.
- FIG. 6 is a diagram of the relationship between exposure time and zoom mode provided by an embodiment of the present invention.
- the number of exposures is 6, and the length of the line segment in the figure represents the length of each exposure time.
- a short interval time can be set between each exposure, during which the camera focal length remains unchanged and the camera does not expose.
- the zoom speed of each zoom in the uniform zoom mode, the zoom speed of each zoom is the same, and the range of each zoom is the same, so the exposure time of each exposure is the same; the second row is the first few times in the case of accelerated zoom The zoom speed is slower, and the corresponding exposure time is longer.
- the zoom speed increases, the corresponding exposure time gradually decreases; the third line is in the deceleration zoom mode, the first few zoom speeds are faster, and the corresponding exposure time is shorter , As the zoom speed slows down, the corresponding exposure time becomes longer.
- the mobile platform After determining the zoom parameter and the exposure parameter, the mobile platform configures the zoom parameter and the exposure parameter to the shooting device, and then controls the shooting device to simultaneously perform exposure based on the zoom parameter and the exposure parameter And zoom to get explosive images.
- Step S504 Determine whether the shooting is successful.
- Step S505 If the shooting is successful, output the explosive image obtained by shooting.
- Step S506 If the shooting fails, output the shooting failure prompt message.
- step S504 after the mobile platform controls the photographing device to perform simultaneous exposure and zooming based on the zoom parameter and the exposure parameter, before outputting the resulting explosive image
- the movable platform can first determine whether the shooting is successful. If the shooting is successful, it can execute step S505 to output and store the resulting explosive image; if the shooting fails, it can execute step S506, that is, output the shooting failure prompt message.
- the shooting failure prompt message includes the reason for the shooting failure and/or the solution.
- judging whether the shooting is successful may include: judging whether the shooting is successful according to the end time of the exposure and the end time of the zoom; if the difference between the end time of the exposure and the end time of the zoom is in advance If the time is within the threshold, it is judged that the shooting is successful, otherwise, it is judged that the shooting failed.
- the preset time threshold may be a standard preset by the mobile platform to measure whether the exposure and zoom of the camera are synchronized, if the difference between the end time of exposure and the end time of zoom is within the preset time threshold It can be approximately regarded that the camera is performing exposure and zooming at the same time.
- the shooting failure reason included in the shooting failure prompt information output by the mobile platform may be that the exposure and zoom are out of sync.
- the mobile platform may monitor the operating status of the mobile platform during the process of controlling the shooting device to perform simultaneous exposure and zooming based on the zoom parameters and the exposure parameters to determine whether the shooting is successful or not. It may include: if the operating state of the mobile platform meets the preset shooting conditions, then determining that the shooting is successful; if the operating state of the mobile platform does not meet the preset shooting conditions, then determining that the shooting is unsuccessful.
- the preset shooting condition refers to that the operating state of the mobile platform is a hovering state, or the preset shooting condition may also refer to the preset number of times the operating state of the mobile platform changes from the hovering state to the moving state.
- the camera only takes one image, and this image is the last explosive image to be output. If the mobile platform breaks from the hovering state in the process of taking the image, the mobile platform The shaking of the camera causes the camera to lose focus, and the resulting explosive image is blurred.
- the preset shooting condition can mean that the operating state of the mobile platform is the hovering state; for the short exposure mode, the camera Multiple images will be taken, and after the multiple images are synthesized, an explosive image is obtained. Therefore, the occasional movement of the mobile platform during the shooting process will not affect the final synthesized explosive image, so the preset shooting conditions at this time can also refer to the above The preset number of times the operating state of the mobile platform changes from the hovering state to the motion state.
- the mobile platform may also monitor the focal length change and exposure condition of the photographing device in the process of controlling the photographing device to perform simultaneous exposure and zooming based on the exposure parameters and zoom parameters to determine the photographing Success: If the focal length change situation matches the focal length change situation indicated by the zoom parameter, and the exposure situation matches the exposure situation indicated by the exposure parameter, it is determined that the shooting is successful; if the If the focal length change condition does not match the focal length change indicated by the zoom parameter, and/or the exposure condition does not match the exposure condition indicated by the exposure parameter, it is determined that the shooting is unsuccessful.
- the focal length change indicated by the zoom parameter is the same for each focal length change, if it is monitored that the focal length change range at a certain focal length change is greater than or less than the previously set focal length change. Range, it is determined that the focal length change condition does not match the focal length change condition indicated by the zoom parameter.
- the mobile platform after the mobile platform determines that the shooting is successful, it can output the explosive image obtained. If the exposure mode used in the shooting process is the long exposure mode, the mobile platform can obtain a shot If the exposure mode is a short exposure mode, the mobile platform can acquire multiple images, and the multiple images can be synthesized to obtain the explosion image. Specifically, when the exposure mode is the short exposure mode, acquiring the initial explosive image obtained by the photographing device, the number of the initial explosive image is at least two; performing image synthesis processing on the initial explosive image To get explosive images.
- the performing image synthesis processing on the initial explosive image to obtain an explosive image may include: preprocessing the initial explosive image to obtain a preprocessed image, and each preprocessing included in the preprocessed image The images have the same image brightness and geometric parameters; the pre-processed image is synthesized to obtain an explosive image.
- the exposure parameters used by the camera during shooting are determined according to the brightness information of the shooting target before shooting, it may change during the shooting process, resulting in inconsistent exposure of the initial exploded image captured, in order to ensure the explosion of the synthesis
- For the consistency of the brightness of the image it is necessary to adjust the brightness of each initial explosion image based on one of the initial explosion images to make the brightness of each initial explosion image consistent.
- one of the initial explosive images needs to be used as a reference, according to the geometric differences between the initial explosive images Perform geometric correction to make the geometric information of each initial explosive image consistent.
- the preprocessing of the initial explosive image may include image quality enhancement operations such as image noise reduction, image brightness adjustment, image geometric adjustment, and the like.
- the step of performing synthesis processing on the preprocessed image may include image mapping, image synthesis, and synthesized image reverse mapping.
- image mapping is to map the obtained initial explosive image to a certain space, which models the shooting process;
- image synthesis refers to the synthesis of the result images of each initial explosive image mapping in the mapped space Operation, that is, the splicing operation of each initial exploded image;
- the composite image reverse mapping refers to the resultant image is spliced in the mapping space and then mapped back to the two-dimensional image plane to obtain the synthesized exploded image .
- the above-mentioned spatial modeling may be a vertebral body model.
- the mapping operation is a scale change operation, that is, the size of each image is scaled down to meet the cone model.
- the scale factor can be calculated according to the time relationship and can be simplified as the moment of shooting (take the moment when the first initial explosive image is taken as the initial moment, and the shooting moments of other initial explosive images are relative to the first initial explosive image. The relative time of the moment) as the proportion of the total time.
- the above-mentioned spatial modeling may be represented in the form of an inverted cone model.
- mapping model shown in Figure 7 is suitable for the case where the focal length changes from small to large during shooting.
- the mapping mode can be obtained by referring to this model. The specific modeling process is not detailed. Introduction.
- the field of view of the image captured by the shooting device at different focal lengths is different.
- the captured image corresponds to a smaller range of the shooting target (similar to zooming in on the shooting target).
- the captured image The range corresponding to the shooting target is relatively large, and the size of the captured image is the same in both cases.
- the mobile platform controls the shooting device mounted on the mobile platform to perform exposure and zooming at the same time based on the explosive shooting instruction. Further, after the shooting ends, it is determined whether the shooting is successful In the case of successful shooting, the explosive image is output, and the shooting failure prompt message is output in the case of failed shooting.
- the mobile platform can control the exposure and zooming of the shooting device at the same time, which ensures that the explosive shooting The synchronization of exposure and zoom avoids the impact of the unsynchronized exposure and zoom on the quality of the explosive image, and improves the quality of the explosive image.
- the mobile platform only outputs the explosive image when the shooting is successful, and outputs prompt information in the case of the shooting failure, which is conducive to the control of the explosive shooting of the mobile platform, and further ensures the quality of the explosive image captured by the mobile platform. At the same time, it can also improve the user experience.
- FIG. 8 is a schematic structural diagram of a mobile platform provided by an embodiment of the present invention.
- the mobile platform shown in FIG. 8 may include a processor 801, a storage 802, and a camera 803.
- the storage 802, the camera 803 and the processor 801 are connected through a bus 804, and the memory 802 is used to store program instructions.
- the memory 802 may include a volatile memory (volatile memory), such as a random-access memory (RAM); the memory 802 may also include a non-volatile memory (non-volatile memory), such as a flash memory (flash memory), solid-state drive (solid-state drive, SSD), etc.; the memory 802 may also include a combination of the foregoing types of memories.
- volatile memory volatile memory
- non-volatile memory non-volatile memory
- flash memory flash memory
- solid-state drive solid-state drive
- SSD solid-state drive
- the processor 801 may be a central processing unit (Central Processing Unit, CPU).
- the processor 801 may further include a hardware chip.
- the above-mentioned hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (programmable logic device, PLD), or the like.
- the PLD may be a field-programmable gate array (FPGA), a general array logic (generic array logic, GAL), etc.
- the processor 801 may also be a combination of the foregoing structures.
- the memory 802 is used to store a computer program, and the computer program includes program instructions, and the processor 801 is used to execute the program instructions stored in the memory 802 to implement the above-mentioned embodiment shown in FIG. 3 The steps of the corresponding method.
- the processor 801 is configured to execute program instructions stored in the memory 802, and the processor 801 is configured to execute when the program instructions are called:
- the photographing device 803 is used for simultaneously performing exposure and zooming to obtain an explosive image when receiving the photographing instruction.
- the photographing device 803 may include an exposure module and a zoom module.
- the exposure module is used to control the exposure of the photographing device; the zoom module is used to control the focal length change of the photographing device.
- the shooting instruction includes a zoom mode when the shooting device performs exposure and zooming simultaneously, and when the processor 801 controls the shooting device to simultaneously perform exposure and zooming based on the shooting instruction, executes the following Operation: determining an exposure mode when the photographing device performs exposure and zooming at the same time based on the zoom mode; controlling the photographing device to perform exposure and zooming at the same time based on the zoom mode and the exposure mode.
- the zoom mode includes constant speed zoom and variable speed zoom
- the variable speed zoom includes accelerated zoom and decelerated zoom
- the processor 801 performs the following operations when determining the exposure mode when the photographing device performs exposure and zooming at the same time based on the zoom mode: collecting current brightness information of the environment where the photographing target is located; Interpret a zoom parameter corresponding to the zoom mode, where the zoom parameter includes a zoom time and a zoom range; and determine the exposure mode based on the zoom parameter and the current brightness information.
- the exposure mode includes a long exposure mode and a short exposure mode
- the processor 801 performs the following operations when determining the exposure mode based on the zoom parameter and the current brightness information: The zoom time and the current brightness information determine whether the photographing device meets the conditions for overexposure in the long exposure mode; if the photographing device meets the conditions for overexposure, it is determined that the exposure mode is short Exposure mode; if the photographing device does not meet the overexposure condition, it is determined that the exposure mode is a long exposure mode.
- the processor 801 controls the photographing device to simultaneously perform exposure and zoom based on the zoom mode and the exposure mode, perform the following operations: based on the current environmental brightness information, the zoom parameter Determine exposure parameters with the exposure mode, where the exposure parameters include the number of exposures, the exposure time corresponding to each exposure, and the exposure value corresponding to each exposure; controlling the shooting device to simultaneously perform based on the zoom parameter and the exposure parameter Exposure and zoom.
- the processor 801 when the processor 801 is configured to call the program instructions, it also executes: monitoring the focus change and exposure of the shooting device to determine whether the shooting is successful; if the focus change is similar to If the focal length change indicated by the zoom parameter matches, and the exposure condition matches the exposure condition indicated by the exposure parameter, it is determined that the shooting is successful; if the focal length change condition matches the focal length indicated by the zoom parameter If the change does not match, and/or the exposure situation does not match the exposure situation indicated by the exposure parameter, it is determined that the shooting is unsuccessful.
- the processor 801 controls the shooting device to perform exposure and zoom at the same time based on the shooting instruction to obtain an explosive image, execute the following Operation: acquiring an initial explosive image obtained by the photographing device, where the number of initial explosive images is at least two; performing image synthesis processing on the initial explosive image to obtain an explosive image.
- the processor 801 when the processor 801 performs image synthesis processing on the initial explosive image to obtain an explosive image, it performs the following operations: preprocess the initial explosive image to obtain a preprocessed image Each pre-processed image included in the pre-processed image has the same image brightness and geometric parameters; the pre-processed image is synthesized to obtain an explosive image.
- the processor 801 when the processor 801 is configured to call the program instructions, it also executes: judging whether the shooting is successful; if the shooting is successful, output the explosive image; if the shooting fails, output a shooting failure prompt information.
- the processor 801 performs the following operations when determining whether the shooting is successful: Determine whether the shooting is successful according to the end time of the exposure and the end time of the zoom; If the difference between the end time of zooming is within the preset time threshold, it is judged that the shooting is successful; otherwise, it is judged that the shooting has failed.
- the processor 801 is configured to execute when the program instructions are called: monitor the running status of the mobile platform; when the processor determines whether the shooting is successful, perform the following operations: if If the operating state of the mobile platform meets the preset shooting conditions, it is determined that the shooting is successful; if the operating state of the mobile platform does not meet the preset shooting conditions, it is determined that the shooting is unsuccessful.
- the processor 801 when the processor 801 is configured to call the program instructions, it also executes: acquiring the operating state of the mobile platform; if the operating state of the mobile platform meets a preset state condition, execute all The step of controlling the photographing device to simultaneously perform exposure and zooming based on the photographing instruction; wherein, the preset state condition includes that the mobile platform is in a hovering state.
- FIG. 9 is a schematic structural diagram of a photographing device provided by an embodiment of the present invention.
- the photographing device shown in FIG. 9 may include a mode interpreter 901, a parameter configurator 902, a zoom device 903 and an exposure device 904.
- the mode interpreter 901 is configured to receive a shooting instruction for explosive shooting sent by an external module, and interpret the shooting instruction to obtain zoom parameters and exposure parameters.
- the external module may be any device connected to the photographing device, such as a drone, a remote control, an unmanned vehicle, etc.
- the shooting instruction may include the zoom mode and exposure mode required for explosive shooting, and the mode interpreter 901 interprets the zoom mode and exposure mode in the shooting instruction to obtain Zoom parameters and exposure parameters.
- the shooting instruction only includes a zoom mode, and the mode interpreter 901 is further configured to determine the exposure mode required for the explosive shooting according to the zoom mode. Further, for Interpret the zoom mode and exposure mode to obtain zoom parameters and exposure parameters.
- the zoom mode includes constant speed zoom and variable speed zoom
- the variable speed zoom includes accelerated zoom and decelerated zoom
- the zoom parameters may include zoom time and zoom range
- the exposure mode may include long exposure and short exposure
- the exposure parameters may include The number of exposures, the exposure time corresponding to each exposure, and the exposure value corresponding to each exposure.
- the mode interpreter 901 is also used to transmit the zoom parameters and exposure parameters to the parameter configurator 902, and the parameter configurator 902 performs corresponding parameter configuration, and sends them to the zoom device 903 and the exposure device 904, respectively. Send the start command.
- the zoom device 903 may include a zoom controller 9031, a zoom actuator 9032, and a zoom device 9033.
- the zoom controller 9031 is configured to receive a startup instruction sent by the parameter configurator 902, and according to the parameter configurator The zoom parameter configured in 902 generates a zoom control instruction.
- the zoom controller 9031 is also used to send a zoom control instruction to the zoom actuator 9032, and the zoom actuator 9032 controls the zoom actuator 9033 to perform zoom control according to the zoom parameters, that is, to control the focus state.
- the focus state of the photographing device can be changed by controlling the zoom 9033 (such as a zoom ring), that is, zoom control can be achieved by controlling the change of the zoom.
- the zoom 9033 can be used to obtain the focal length state of the photographing device, and feed back the focal length state to the zoom controller 9031 to assist the zoom controller 9031 in zoom control.
- the zoom module 903 may further include a focus state monitor 9034, and the focus state monitor 9034 is configured to receive the focus state fed back by the zoom device 9033 and send the focus state to the zoom controller 9031.
- the zoom controller 9031 is further configured to analyze the zoom control result according to the received focus state, and feed the zoom control result back to the parameter configurator 902, and the parameter configurator 902 analyzes and judges the zoom control result To determine whether to zoom in accordance with the zoom mode in the shooting instruction.
- the parameter configurator 902 is also used to feed back the result of the zoom control to the mode interpreter 901, and the mode interpreter 901 feeds back the result of the zoom control to the external module, so that the external module determines whether to output the explosion from the shooting device according to the result of the zoom control Mode image or resend the shooting instruction.
- the exposure device 904 may include an exposure controller 9041, an exposure actuator 9042, and an exposure device 9043.
- the exposure controller 9041 is configured to receive a start instruction sent by the parameter configurator 902, and perform the exposure according to the parameter configurator 902.
- the parameters generate exposure control instructions.
- the exposure controller 9041 is also used to send the exposure control instruction to the exposure actuator 9042, and the exposure actuator 9042 controls the exposure device 9043 to perform exposure control according to exposure parameters. It should be understood that the exposure state of the photographing device can be controlled by controlling the exposure device 9043 (such as a shutter).
- the exposure device 9043 can be used to obtain the exposure state of the photographing device, and feed back the exposure state to the exposure controller 9041 to assist the exposure controller 9041 in exposure control.
- the exposure module 904 may further include an exposure state monitor 9044, and the exposure state monitor 9044 is configured to receive the exposure state fed back by the exposure unit 9043 and send the exposure state to the exposure controller 9041.
- the exposure controller 9041 is further configured to analyze the exposure control result according to the received exposure state, and feed back the exposure control result to the parameter configurator 902, and the parameter configurator 902 analyzes and judges the exposure control result to Determine whether to perform exposure according to the exposure mode in the shooting instructions.
- the parameter configurator 902 is also used to feed back the result of the zoom control to the mode interpreter 901, and the mode interpreter 901 feeds back the result of the exposure control to the external module, so that the external module judges whether to output the explosion from the shooting device according to the result of the exposure control Mode image or resend the shooting instruction.
- the storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.
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Abstract
一种拍摄方法及相关设备,其中,该方法包括:接收针对爆炸式拍摄的拍摄指令;基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像。采用本发明实施例,由于移动平台控制拍摄装置的曝光和变焦同时进行,确保了爆炸式拍摄的曝光和变焦的同步,避免了曝光和变焦不同步对爆炸式图像的影响,提高了爆炸式图像的质量。
Description
本发明涉及图像技术领域,尤其涉及一种拍摄方法及相关设备。
随着时代的不断发展,用户对图像拍摄的要求也越来越高,为了满足用户的需求,各种各样的图像拍摄方式应运而生,爆炸式拍摄是其中一种,所谓爆炸式拍摄指的是利用拍摄装置镜头的焦距可变性,在按下快门的瞬间急速改变焦距,使得焦距变大或变小,从而使得画面产生强烈的由中心向四周扩散的爆炸放射线条。
目前的爆炸式拍摄在手动调节变焦装置时存在曝光和变焦不同步的问题,影响拍摄到的爆炸式图像的效果。因此,如何提高爆炸式图像的质量成为研究的热点问题。
发明内容
本发明实施例提供了一种拍摄方法及相关设备,可以提高爆炸式图像的质量。
第一方面,本发明实施例提供了一种拍摄方法,包括:
接收针对爆炸式拍摄的拍摄指令;
基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像。
第二方面,本发明实施例提供了一种移动平台,包括:存储器、处理器和拍摄装置:
所述存储器,用于存储程序代码;
所述处理器,用于调用所述程序代码,当所述程序代码被执行时,用于执行以下操作:
接收针对爆炸式拍摄的拍摄指令;
基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像;
所述拍摄装置,用于当接收到所述拍摄指令时,同时进行曝光和变焦以得到爆炸式图像。
相应的,本发明实施例提供了一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序指令,所述计算机程序指令被执行时用于实现上述的第一方面所述的拍摄方法。
本发明实施例中,当接收到爆炸式拍摄指令时,移动平台基于爆炸式拍摄指令控制挂载于移动平台上的拍摄装置同时进行曝光和变焦,以得到爆炸式图像,由于移动平台可控制拍摄装置的曝光和变焦同时进行,确保了爆炸式拍摄时曝光和变焦的同步,避免了曝光和变焦不同步对爆炸式图像质量的影响,提高了爆炸式图像质量。此外,用户不需要手动调整变焦,而只需要发送爆炸式拍摄的拍摄指令即可得到爆炸式拍摄图像,提升了用户体验。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的一种爆炸式图像的示意图;
图2为本发明实施例提供的一种爆炸式拍摄的应用场景图;
图3为本发明实施例提供的一种拍摄方法的流程示意图;
图4为本发明实施例提供的另一种拍摄方法的流程示意图;
图5为本发明实施例提供的又一种拍摄方法的流程示意图;
图6为本发明实施例提供的一种变焦模式和每次曝光的曝光时间关系图;
图7为本发明实施例提供的一种椎体模型的示意图;
图8为本发明实施例提供的一种移动平台的结构示意图;
图9为本发明实施例提供的一种拍摄设备的结构示意图。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
爆炸式拍摄是一种基于拍摄装置的焦距可变性和曝光可控性实现的拍摄方式,一般情况下,拍摄装置的焦距可变性依赖于拍摄装置的变焦镜头,调节拍摄装置的变焦镜头可改变拍摄装置的焦距状态;拍摄装置的曝光可控性是指可以通过拍摄装置的快门来控制曝光时间。具体地,爆炸式拍摄指的是在按下拍摄装置快门的瞬间急速推拉变焦镜头,将焦距变大或变小,从而使得画面产生强烈的由中心向四周扩散的爆炸放射线条,如图1所示。
由图1可知,爆炸式拍摄所得的爆炸式图像中心相对清晰,越靠近边缘清晰度越低,这是由于爆炸式拍摄时图像中心的焦距变化较弱,越靠近画面边缘焦距变化越强烈。因此,在爆炸式拍摄时通常将拍摄主体放在画面中心处,这样既能使拍摄主体相对清晰,又能虚化背景,如图1所示在突出中心叶子的同时,虚化了拍摄背景中其他叶子。由于爆炸式拍摄的上述拍摄特性,爆炸式拍摄可以应用于对运动画面的拍摄,或者对街道夜景灯光的拍摄等多种拍摄场景中。
常见的爆炸式拍摄是通过手动调节拍摄装置进行变焦和曝光的。具体地,是通过拍摄过程中,手动转动拍摄装置的变焦环调节拍摄装置的焦距变化,通过拍摄装置的快门控制拍摄装置的曝光情况。然而,在手动转动变焦环时会造成拍摄装置的抖动,从而影响拍摄所得的爆炸式图像的质量。
并且,通过手动调节拍摄装置进行变焦和曝光,很容易出现拍摄装置已经开始曝光,但是还没有开始转动变焦环进行变焦的情况,或者曝光还没有结束,转动变焦环的动作已经执行结束的情况,造成了曝光和变焦的不同步,如果曝光和变焦不同步,则在拍摄得到的爆炸式图像中不能完全体现出变焦效果,从而影响爆炸式图像的质量。
因此,针对上述问题,本发明实施例提出一种拍摄方法,所述拍摄方法可以应用于挂载有拍摄装置的移动平台中,移动平台可控制拍摄装置进行爆炸式拍摄。具体地,当移动平台接收到爆炸式拍摄的拍摄指令时,控制所述移动平台上的拍摄装置同时进行曝光和变焦,以得到爆炸式图像,由于移动平台可控 制拍摄装置的曝光和变焦同时进行,确保了爆炸式拍摄时曝光和变焦的同步,避免了曝光和变焦不同步对爆炸式图像质量的影响,提高了爆炸式图像的质量。并且,本发明实施例提供的拍摄方法中,用户不需要手动调整变焦,而只需要发送爆炸式拍摄的拍摄指令即可得到爆炸式拍摄图像,提升了用户体验。
此外,本发明实施例提供的拍摄方法中,由移动平台控制拍摄装置在爆炸式拍摄时同时进行曝光和变焦的,避免了由于手动调节曝光和变焦引起的拍摄装置抖动对爆炸式图像质量的影响。另外,拍摄装置是挂载于移动平台上以进行爆炸式拍摄的,实现了多视角拍摄。
下面通过图2详细介绍本发明实施例所述的拍摄方法。参考图2,为本发明实施例提供的一种爆炸式拍摄的应用场景图,在图2中假设移动平台为无人机201,无人机上挂载有拍摄装置202,无人机201接收到的爆炸式拍摄指令可以是用户通过与无人机201匹配的终端控制设备发送的,在图2中假设与无人机匹配的终端控制设备为遥控器203,假设拍摄目标为街道夜景204。在一个实施例中,用户可以通过遥控器203控制无人机201飞行,当无人机201飞行到对拍摄目标204进行拍摄的合适位置时,用户可以通过遥控器203控制无人机201处于悬停状态,并且向无人机201发送爆炸式拍摄的拍摄指令;当无人机201接收到爆炸式拍摄的拍摄指令时,基于所述拍摄指令控制拍摄装置202同时进行曝光和变焦,以得到爆炸式图像205。应当理解的,利用挂载于无人机上的拍摄装置进行爆炸式拍摄,实现了多视角拍摄,扩大了爆炸式拍摄的应用范围,并且本发明实施例可控制拍摄装置同时进行变焦和曝光,提高了拍摄得到的爆炸式图像的质量。此外,用户不需要手动调整变焦,而只需要发送爆炸式拍摄的拍摄指令即可得到爆炸式拍摄图像,提升了用户体验。
本发明实施例提供了一种如图3所述的拍摄方法,所述拍摄方法可以应用在移动平台中,所述移动平台挂载有拍摄装置,所述拍摄装置可以进行爆炸式拍摄。图3所述的拍摄方法可以由移动平台执行,具体地可由移动平台的处理器执行,所述移动平台可以包括无人机、无人车、移动机器人和摄像机中的任意一个,图3所述的拍摄方法可包括如下步骤:
步骤S301、移动平台接收针对爆炸式拍摄的拍摄指令。
应当理解的,为了保证移动平台安全有效的移动并执行某些操作比如拍摄操作、避障操作等,可为移动平台配置相匹配的终端控制设备比如遥控器,或者在移动平台内配置移动控制系统。在一个实施例中,如果移动平台配置有相匹配的终端控制设备,用户可通过所述终端控制设备监测移动平台的移动状况,并通过所述终端控制设备控制移动平台的移动以及控制移动平台执行某些操作。例如,假设移动平台为无人机,与无人机相匹配的终端控制设备为遥控器,用户可通过遥控器实现无人机跟踪飞行,避障等功能。在其他实施例中,如果移动平台内配置有移动控制系统,则移动控制系统可监测移动平台的移动状态,从而实现对移动平台的移动控制。
在步骤S301中,所述拍摄指令是用于指示移动平台控制拍摄装置对拍摄目标进行拍摄的指令,在一个实施例中,所述拍摄指令可以是与所述移动平台相匹配的终端控制设备发送的,或者所述拍摄指令也可以是所述移动平台的移动控制系统生成并发送的。
具体地,如果所述拍摄指令是与所述移动平台相匹配的终端控制设备发送的,则接收与所述移动平台相匹配的终端控制设备发送的拍摄指令的方式可以为:当所述终端控制设备获取到针对爆炸式拍摄的操作时,可以根据所述操作生成针对爆炸式拍摄的拍摄指令,并将所述拍摄指令发送给所述移动平台;如果所述拍摄指令是所述移动平台的移动控制系统发送的,则接收移动平台的移动控制系统发送的拍摄指令的方式可以为:在所述移动平台开始移动时,为所述移动平台设定移动路线,并在所述移动路线中设置进行爆炸式拍摄的拍摄点;设置成功后,移动控制系统可控制移动平台按照设定的移动路线进行移动,当监测到所述移动平台移动到拍摄点时,生成针对爆炸式拍摄的拍摄指令并发送给所述移动平台。
步骤S302、基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像。
应当理解的,爆炸式图像是在曝光的同时快速控制拍摄装置的焦距变化得到的图像,本发明实施例中可控制拍摄装置的变焦和曝光严格同步,提高了拍摄得到的爆炸式图像的质量。
在一个实施例中,拍摄装置上配置有变焦装置和曝光装置,移动平台基于 拍摄指令控制拍摄装置同时进行曝光和变焦,实质上是控制拍摄装置的变焦装置和曝光装置在拍摄装置进行拍摄时的曝光状态和焦距状态,使得变焦时间和曝光时间相同,从而得到质量较高的爆炸式图像。
在一个实施例中,为了在节省移动平台功耗开销的同时,得到较高质量的爆炸式图像,移动平台基于拍摄指令控制拍摄装置同时进行曝光和变焦之前,还可以判断移动平台当前的运行状态是否符合预设状态条件,具体地,移动平台在基于拍摄指令控制所述拍摄装置同时进行曝光和变焦之前:获取所述移动平台的运行状态;若所述移动平台的运行状态满足预设状态条件,则执行所述基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦的步骤。
其中,预设状态条件包括所述移动平台处于悬停状态。在拍摄图像时如果拍摄装置处于运行状态会导致失焦,从而使得拍摄得到的图像模糊不清。在本发明实施例中拍摄装置挂载于移动平台上,拍摄装置随着移动平台的运动而运动,本发明实施例通过保证移动平台处于悬停状态来保证拍摄装置以稳定状态进行拍摄,以在节省移动平台功耗开销的同时,得到较高质量的爆炸式图像。
在其他实施例中,如果所述移动平台的运行状态不满足预设状态条件,则所述移动平台可忽略此次接收到的拍摄指令,或者所述移动平台可生成悬停提示信息,所述悬停提示信息用于提示用户或者移动控制系统将所述移动平台悬停。
当所述移动平台基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦的步骤执行结束之后,便可得到爆炸式图像,进一步的,所述移动平台可以将所述爆炸式图像输出以供用户查看或使用,同时也可以将所述爆炸式图像存储在所述移动平台中。
在一个实施例中,为了提升用户体验,需要保证所述移动平台输出的爆炸式图像是在拍摄成功的情况下所得的图像,因此在将拍摄所得的爆炸式图像输出给用户之前,所述移动平台还需要确定所述拍摄是否成功:如果拍摄成功,则所述移动平台输出所述爆炸式图像;如果所述拍摄失败,则所述移动平台可输出拍摄失败提示信息。可选的,所述拍摄失败提示信息中可包括拍摄失败的原因,这样一来,有助于用户根据所述拍摄失败原因调整所述移动平台的拍摄,以使得所述移动平台重新进行拍摄直到拍摄成功,如图4所示。
在一个实施例中,决定拍摄是否成功的因素有很多,比如在拍摄过程中所述移动平台是否由悬停状态变为运行状态,或者在拍摄过程中所述拍摄装置是否同时进行了曝光和变焦,如果在拍摄过程中所述移动平台始终保持悬停状态,或在拍摄过程中所述拍摄装置同时进行曝光和变焦,则可确定拍摄成功;反之,则可确定拍摄不成功。上述只是本发明实施例提供的两种影响拍摄成功与否的因素,在实际拍摄过程中还可能存在其他影响拍摄成功是否成功的因素,本发明实施例中不一一介绍。
本发明实施例中,当接收到爆炸式拍摄指令时,移动平台基于爆炸式拍摄指令控制挂载于移动平台上的拍摄装置同时进行曝光和变焦,以得到爆炸式图像。由于移动平台可控制拍摄装置的曝光和变焦同时进行,确保了爆炸式拍摄时曝光和变焦的同步,避免了曝光和变焦不同步对爆炸式图像质量的影响,提高了爆炸式图像质量。另外,通过挂载于移动平台上的拍摄装置进行爆炸式拍摄,满足了多视角拍摄的需求。此外,用户不需要手动调整变焦,而只需要发送爆炸式拍摄的拍摄指令即可得到爆炸式拍摄图像,提升了用户体验。
请参考图5,为本发明实施例提供的另一种拍摄方法的流程示意图,如图5所述的拍摄方法,可包括如下步骤:
步骤S501、接收针对爆炸式拍摄的拍摄指令。
在一个实施例中,步骤S501中包括的一些可行的实施方式中可参见图3所示的实施例中相应部分的描述,在此不再赘述。
步骤S502、获取所述拍摄指令中包括的变焦模式,并基于所述变焦模式确定所述拍摄装置同时进行曝光和变焦时的曝光模式。
在一个实施例中,步骤S501中接收到的拍摄指令中可携带有变焦模式,所述变焦模式是指所述拍摄装置的焦距变化方式,所述变焦模式可包括匀速变焦和变速变焦,其中,所述匀速变焦是指在变焦过程中,所述拍摄装置按照恒定的速度变焦,所述变速变焦是指在变焦过程中,所述拍摄装置按照变化的速度进行变焦,所述变速变焦包括加速变焦和减速变焦,所述加速变焦是指在变焦过程中,所述拍摄装置变焦的速度由慢到快,所述减速变焦时是指在变焦过程中,所述拍摄装置变焦的速度由快到慢。经实践表明,所述拍摄装置通过匀速 变焦模式拍摄得到的爆炸式图像中爆炸式线条均匀,具有规律感,所述拍摄装置通过变速变焦模式拍摄得到的爆炸式图像中线条运动效果较为显著,具有较强的视觉冲击力。因此,在进行爆炸式拍摄时,可根据实际需求选择合适的变焦模式。
本发明实施例为了得到质量较高的爆炸式图像,需要控制拍摄装置在拍摄时同时进行曝光和变焦,因此在确定了变焦模式的情况下,所述移动平台需要基于所述变焦模式来确定与所述变焦模式相匹配的曝光模式,以实现拍摄装置同时进行曝光和变焦。
在一个实施例中,所述基于所述变焦模式确定所述拍摄装置同时进行曝光和变焦时的曝光模式,包括:采集拍摄目标所处环境的当前亮度信息;解译所述变焦模式对应的变焦参数,所述变焦参数包括变焦时间和变焦范围;基于所述变焦参数和所述当前亮度信息确定所述曝光模式。其中,所述拍摄目标是指所述拍摄装置拍摄的对象。所述变焦参数中变焦时间是指拍摄装置的焦距变化所花费的时间,变焦范围是指所述拍摄装置的焦距从A状态变化到B状态,示例的所述变焦时间可为1s,所述变焦范围可为23mm-55mm。
在一个实施例中,所述移动平台可通过所述拍摄装置上的光感模块来采集拍摄目标所处环境的当前亮度信息,在采集到拍摄目标所处环境的当前亮度信息之后,所述移动平台可基于变焦参数和所述当前亮度信息确定所述曝光模式,所述曝光模式包括长曝光模式和短曝光模式,所述长曝光模式是指在变焦过程中一直保持曝光,所述短曝光模式是指在变焦过程中多次曝光,每次曝光时间较短。所述长曝光模式适用于在变焦过程中拍摄场景的亮度不是很高的情况下,所述短曝光模式适用于在变焦过程中拍摄场景的亮度呈现高动态变化的情况下。由此可知,所述曝光模式与所述变焦时间和所述当前亮度信息有关。
可选的,所述基于所述变焦参数和所述当前亮度信息确定所述曝光模式,包括:基于所述变焦时间和所述当前亮度信息,判断在所述长曝光模式下,所述拍摄装置是否符合过度曝光条件;若所述拍摄装置符合所述过度曝光的条件,则确定所述曝光模式为短曝光模式;若所述拍摄装置不符合所述过度曝光的条件,则确定所述曝光模式为长曝光。
在一个实施例中,为了确保拍摄装置能够以合适的曝光模式进行拍摄,所 述拍摄装置在拍摄之前可先控制拍摄装置进入拍摄预览模式,在所述拍摄预览模式下通过上述方法为所述拍摄装置选择合适的曝光模式。
示例的,过度曝光可以指所述拍摄装置在曝光时间内接收到的光过多(也即曝光量过大),从而导致拍摄出的图像发白。其中,所述曝光量是指所述拍摄装置在曝光时间内能够接收到光的多少。示例的,曝光量是由拍摄装置的感光度ISO、曝光时间和光圈三个因素控制的。通常情况下,挂载于移动平台上的拍摄装置的光圈是固定的,本发明实施例中为了控制拍摄装置进行同时曝光和变焦,设置曝光时间和变焦时间相同,因此,本发明实施例中假设光圈固定,所述曝光时间等于所述变焦时间,一旦变焦时间确定所述曝光时间也确定,此时所述拍摄装置的曝光量由感光度ISO控制,所述ISO是指拍摄装置的感光元件对光的接收能力。
可选的,所述拍摄装置符合过度曝光的条件是指:以变焦时间为曝光时间且在所述拍摄装置的光圈固定的情况下,若在当前亮度信息所指示的亮度下,将所述拍摄装置的ISO值设置为最小,所述拍摄装置的曝光量仍然过高(或者说仍然过度曝光)。换句话说,假设光圈固定,如果在曝光时间内无论怎么调节拍摄装置的ISO值都会导致拍摄装置过度曝光,则确定所述拍摄装置符合过度曝光的条件。可以理解的,如果在曝光时间内可以找到一个合适的ISO值使得所述拍摄装置正常曝光,则确定所述拍摄装置不符合过度曝光的条件。
需要说明的是,本领域技术人员可根据实际情况确定所述过度曝光条件以判断是否正常曝光,本发明实施例不对此做具体限制。
总结来说,如果所述拍摄装置不符合过度曝光的条件,则表明在所述变焦时间和拍摄目标的当前亮度下可以选用长曝光模式,如果所述拍摄装置符合过度曝光条件,则表明在所述变焦时间和拍摄目标的当前亮度下不适合选用长曝光模式,确定所述拍摄装置的曝光模式为短曝光模式。
步骤S503、控制所述拍摄装置基于所述曝光模式和所述变焦模式同时进行曝光和变焦,以得到爆炸式图像。
在一个实施例中,确定了拍摄装置的曝光模式和变焦模式之后,所述移动平台控制所述拍摄装置基于所述曝光模式和所述变焦模式同时进行曝光和变焦,以得到爆炸式图像。可选的,控制所述拍摄装置基于所述变焦模式和曝光 模式同时进行曝光和变焦是指将所述变焦模式下的变焦参数和所述曝光模式下的曝光参数配置给拍摄装置,然后控制拍摄装置按照配置好的变焦参数和曝光参数来改变拍摄装置在拍摄时的焦距状态和曝光状态。因此,控制所述拍摄装置基于所述曝光模式和所述变焦模式同时进行曝光和变焦时需要确定所述曝光模式下的曝光参数,以及所述变焦模式下的变焦参数。
具体地,所述控制所述拍摄装置基于所述变焦模式和所述曝光模式同时进行曝光和变焦,包括:基于拍摄目标的当前环境亮度信息、所述变焦参数和所述曝光模式确定曝光参数;控制所述拍摄装置基于变焦参数和所述曝光参数同时进行曝光和变焦。
所述变焦参数可包括变焦时间和变焦范围。在一种实施方式中,所述移动平台接收到的所述拍摄指令中包括的变焦模式是用户选择的,用户在选择所述变焦模式的同时设置了变焦时间和变焦范围,因此移动平台只需要对变焦模式进行解译操作便可获取到变焦参数。
所述曝光参数可包括曝光次数、每次曝光对应的曝光时间以及每次曝光对应的曝光值。在长曝光模式下,所述曝光参数中的曝光次数等于1,所述每次曝光对应的曝光时间等于变焦时间。在短曝光模式下,所述曝光参数中的曝光次数至少为两次,所述曝光次数是根据当前环境亮度信息决定的。可选的,如果曝光模式为短曝光模式,则此时变焦参数中可以包括变焦次数、每次变焦的变焦范围和每次变焦的变焦速度。可选的,可设定每次变焦的范围相同,举例来说,假设变焦范围为从A到B,变焦次数为3次,则每次变焦的范围变化量为(B-A)/3,第一次变焦的范围为从A到A+(B-A)/3,第二次变焦的范围为从A+(B-A)/3到A+2*A+(B-A)/3,第三次变焦的范围为从A+2*A+(B-A)/3到B。
为了保证拍摄装置的曝光和变焦的同步,设置变焦次数和曝光次数是相同的,所述每次变焦的变焦速度是由变焦模式确定的:如果变焦模式为匀速变焦,则每次变焦的变焦速度设置为恒定的;如果变焦模式为加速变焦,则每次变焦的变焦速度逐渐增大;如果变焦模式为减速变焦,则每次变焦的变焦速度逐渐减小。
举例来说,参考图6为本发明实施例提供的一种曝光时间和变焦模式之间 的关系图,在图6中假设曝光次数为6次,图中线段的长短表示每次曝光时间的长短。可选的,在每次曝光之间可以设置有短暂的间隔时间,在该间隔时间内相机焦距不变,相机不曝光。图6中第一行中在匀速变焦模式下,每次变焦的变焦速度相同,而且每次变焦的范围相同,因此,每次曝光的曝光时间相同;第二行在加速变焦情况下前面几次的变焦速度较慢,对应的曝光时间较长,随着变焦速度加快,相应的曝光时间逐渐减少;第三行在减速变焦模式下,前面几次的变焦速度较快,相应的曝光时间较短,随着变焦速度减慢,相应的曝光时间变长。
在确定了变焦参数和曝光参数之后,所述移动平台将所述变焦参数和所述曝光参数配置给所述拍摄装置,然后控制所述拍摄装置基于所述变焦参数和所述曝光参数同时进行曝光和变焦,以得到爆炸式图像。
步骤S504、判断拍摄是否成功。
步骤S505、若拍摄成功,则输出拍摄得到的爆炸式图像。
步骤S506、若拍摄失败,则输出拍摄失败提示信息。
在一个实施例中,在步骤S504中,在所述移动平台控制所述拍摄装置基于所述变焦参数和所述曝光参数进行同时进行曝光和变焦的步骤结束之后,将得到的爆炸式图像输出之前,所述可移动平台可以先判断是否拍摄成功,如果拍摄成功,则可执行步骤S505,即将得到的爆炸式图像输出并存储;如果拍摄失败,则可执行步骤S506,即输出拍摄失败提示信息。可选的,为了用户在拍摄失败之后,找到拍摄失败原因,重新进行拍摄,拍摄失败提示信息中了包括拍摄失败原因,和/或解决办法。
在一个实施例中,判断拍摄是否成功可包括:根据所述曝光的结束时间和所述变焦的结束时间判断拍摄是否成功;若所述曝光的结束时间和所述变焦的结束时间之差在预设时间阈值之内,则判断拍摄成功,否则,判断拍摄失败。其中,所述预设时间阈值可以是移动平台预先设置的用来衡量所述拍摄装置的曝光和变焦是否同步的标准,如果曝光的结束时间和变焦的结束时间之差在所述预设时间阈值内,可近似看作拍摄装置同时进行了曝光和变焦,如果曝光的结束时间和变焦的结束时间之差超出所述预设时间阈值,可确定拍摄装置的曝光和变焦不同步,从而判断移动平台的拍摄失败。可选的,所述移动平台输出 的拍摄失败提示信息中包括的拍摄失败原因可以是曝光和变焦不同步。
再一个实施例中,所述移动平台在控制所述拍摄装置基于所述变焦参数和所述曝光参数进行同时曝光和变焦的过程中,可监测所述移动平台的运行状态,判断拍摄是否成功还可包括:若所述移动平台的运行状态符合预设拍摄条件,则确定拍摄成功;若所述移动平台的运行状态不符合预设拍摄条件,则确定拍摄不成功。其中,所述预设拍摄条件是指所述移动平台的运行状态为悬停状态,或者预设拍摄条件也可以指所述移动平台的运行状态由悬停状态转变为运动状态的预设次数。示例的,对于长曝光模式来说,拍摄装置只拍摄一张图像,该张图像就是最后要输出的爆炸式图像,如果在拍摄该图像过程中移动平台脱离了悬停状态,则此时由于移动平台的抖动导致拍摄装置失焦,从而得到的爆炸式图像模糊不清,此种情况下,预设拍摄条件可以指所述移动平台的运行状态为悬停状态;对于短曝光模式来说,拍摄装置会拍摄多张图像,将多张图像进行合成处理后,得到爆炸式图像,因此在拍摄过程中移动平台偶尔移动不会影响最后合成的爆炸式图像,所以此时预设拍摄条件也可以指所述移动平台的运行状态由悬停状态转变为运动状态的预设次数。
在其他实施例中,所述移动平台在控制所述拍摄装置基于所述曝光参数和变焦参数进行同时曝光和变焦的过程中,还可以监测所述拍摄装置的焦距变化情况和曝光情况以判断拍摄是否成功:若所述焦距变化情况与所述变焦参数所述指示的焦距变化情况相匹配,且所述曝光情况与所述曝光参数所指示的曝光情况相匹配,则确定拍摄成功;若所述焦距变化情况与所述变焦参数所指示的焦距变化不匹配,和/或所述曝光情况与所述曝光参数所指示的曝光情况不匹配,则确定拍摄不成功。举例来说,假设所述变焦参数所指示的焦距变化情况为每次焦距变化的范围相同,如果监测到在某次焦距变化时焦距变化的范围大于或小于与之前设定的每次焦距变化的范围,则确定所述焦距变化情况与所述变焦参数所述指示的焦距变化情况不匹配。
在一个实施例中,所述移动平台在判断出拍摄成功之后,可输出拍摄所得的爆炸式图像,如果拍摄过程中所使用的曝光模式为长曝光模式,则移动平台可获取到一张拍摄得到的爆炸式图像,将所述爆炸式图像稍作处理就可输出;如果曝光模式为短曝光模式时,移动平台可获取到多张图像,将多张图像进行 合成处理后得到爆炸式图像。具体地,当所述曝光模式为短曝光模式时,获取所述拍摄装置得到的初始爆炸式图像,所述初始爆炸式图像的数量为至少两张;对所述初始爆炸式图像进行图像合成处理,以得到爆炸式图像。
所述对所述初始爆炸式图像进行图像合成处理,以得到爆炸式图像,可包括:对所述初始爆炸式图像进行预处理,得到预处理图像,所述预处理图像中包括的各个预处理图像具有相同的图像亮度和几何参数;对所述预处理图像进行合成处理,得到爆炸式图像。
由于拍摄装置在拍摄时使用的曝光参数是根据拍摄前的拍摄目标的亮度信息确定的,在拍摄过程中可能会发生变化,导致拍得的初始爆炸式图像的曝光情况不一致,为了保证合成的爆炸式图像的亮度的一致性,需要以其中一幅初始爆炸式图像为基准,调整各幅初始爆炸式图像的亮度,使各幅初始爆炸式图像的亮度一致。以外,各幅初始爆炸式图像之间可能会存在几何参数的差别,为了保证图像合成的顺利进行,需要以其中一幅初始爆炸式图像为基准,根据各幅初始爆炸式图像之间的几何差别进行几何校正,使各幅初始爆炸式图像的几何信息一致。综上所述,对所述初始爆炸式图像进行预处理可包括图像降噪等图像质量增强操作、图像亮度调整、图像几何调整等。
在一个实施例中,所述对所述预处理图像进行合成处理的步骤可包括图像映射、图像合成和合成图像反映射。其中,图像映射是将得到的初始爆炸式图像映射到某个空间内,该空间建模了拍摄过程;图像合成是指在映射的空间内,对各副初始爆炸式图像映射的结果图进行合成操作,也即对各副初始爆炸式图像进行拼接操作;合成图像反映射,指的是在映射空间内拼接得到结果图后,再映射回二维图像平面,便可得到合成后的爆炸式图像。
在一个实施例中,由于爆炸式拍摄的实现过程是在拍摄过程中急速变焦,因此在本发明实施例中,上述空间建模可以为椎体模型如图7所示,将拍得的初始爆炸式图像按时间先后顺序,依次映射到层0、层1……,映射操作是尺度变化操作,即按比例缩小各图的尺寸,使其满足椎体模型。比例因子可以根据时间关系计算,可以简化表示为拍摄的时刻(以拍第一张初始爆炸式图像的时刻为初始时刻,其它初始爆炸式图像的拍摄时刻就是相对于第一张初始爆炸式图像的时刻的相对时间)占总时间的比例。在其他实施例中,上述空间建模 可以用一个倒椎体模型的形式来表示。
需要说明的是,图7所示的映射模型适用于拍摄时焦距由小变大的情况下,对于拍摄时焦距由小变大的情况映射模式可参照该模型得到,具体的建模过程不详细介绍。
所述拍摄装置以不同焦距拍得的图像视野不一样,在长焦的时候,拍得的图像对应拍摄目标的范围较小(类似将拍摄目标放大),在短焦的时候,拍得的图像对应拍摄目标的范围较大,两种情况下拍摄所得图像尺寸相同。为了能把两幅图像融合,不能直接把长焦拍得的图像和短焦拍得的图像合成,需要将拍得的多张初始爆炸式图像按时间先后顺序进行尺度变化操作,按比例缩小各图的尺寸。
本发明实施例中,当接收到爆炸式拍摄指令时,移动平台基于爆炸式拍摄指令控制挂载于移动平台上的拍摄装置同时进行曝光和变焦,进一步的,在拍摄结束后,判断拍摄是否成功,在拍摄成功的情况下输出爆炸式图像,在拍摄失败的情况下输出拍摄失败提示信息,本发明实施例中由于移动平台可控制拍摄装置的进行曝光和变焦同时进行,确保了爆炸式拍摄时曝光和变焦的同步,避免了曝光和变焦不同步对爆炸式图像质量的影响,提高了爆炸式图像质量。另外,移动平台在拍摄成功的情况才输出爆炸式图像,在拍摄失败的情况下输出提示信息,有利于对移动平台的爆炸式拍摄进行控制,在进一步保证了移动平台拍摄爆炸式图像的质量的同时,还能够提升了用户体验。
请参见图8,为本发明实施例提供的一种移动平台的结构示意图,如图8所示的移动平台可包括处理器801、存储802和拍摄装置803,所述存储器802、所述拍摄装置803和所述处理器801通过总线804连接,所述存储器802用于存储程序指令。
所述存储器802可以包括易失性存储器(volatile memory),如随机存取存储器(random-access memory,RAM);存储器802也可以包括非易失性存储器(non-volatile memory),如快闪存储器(flash memory),固态硬盘(solid-state drive,SSD)等;存储器802还可以包括上述种类的存储器的组合。
所述处理器801可以是中央处理器(Central Processing Unit,CPU)。所述 处理器801还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit,ASIC),可编程逻辑器件(programmable logic device,PLD)等。该PLD可以是现场可编程逻辑门阵列(field-programmable gate array,FPGA),通用阵列逻辑(generic array logic,GAL)等。所述处理器801也可以为上述结构的组合。
本发明实施例中,所述存储器802用于存储计算机程序,所述计算机程序包括程序指令,处理器801用于执行存储器802存储的程序指令,用来实现上述图3所示的实施例中的相应方法的步骤。
在一个实施例中,所述处理器801用于执行存储器802存储的程序指令,所述处理器801被配置用于调用所述程序指令时执行:
接收针对爆炸式拍摄的拍摄指令;基于所述拍摄指令控制所述拍摄装置803同时进行曝光和变焦,以得到爆炸式图像。所述拍摄装置803用于当接收到所述拍摄指令时,同时进行曝光和变焦以得到爆炸式图像。
在一个实施例中,所述拍摄装置803可包括曝光模块和变焦模块,所述曝光模块,用于控制所述拍摄装置的曝光;所述变焦模块,用于控制所述拍摄装置的焦距变化。
在一个实施例中,所述拍摄指令包括所述拍摄装置同时进行曝光和变焦时的变焦模式,所述处理器801在基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦时,执行如下操作:基于所述变焦模式确定所述拍摄装置同时进行曝光和变焦时的曝光模式;控制所述拍摄装置基于所述变焦模式和所述曝光模式同时进行曝光和变焦。
在一个实施例中,所述变焦模式包括匀速变焦和变速变焦,所述变速变焦包括加速变焦和减速变焦。
在一个实施例中,所述处理器801在所述基于所述变焦模式确定所述拍摄装置同时进行曝光和变焦时的曝光模式时,执行如下操作:采集拍摄目标所处环境的当前亮度信息;解译所述变焦模式对应的变焦参数,所述变焦参数包括变焦时间、变焦范围;基于所述变焦参数和所述当前亮度信息确定所述曝光模式。
在一个实施例中,所述曝光模式包括长曝光模式和短曝光模式,所述处理 器801在基于所述变焦参数和所述当前亮度信息确定所述曝光模式时,执行如下操作:基于所述变焦时间和所述当前亮度信息,判断在所述长曝光模式下,所述拍摄装置是否符合过度曝光的条件;若所述拍摄装置符合所述过度曝光的条件,则确定所述曝光模式为短曝光模式;若所述拍摄装置不符合所述过度曝光的条件,则确定所述的曝光模式为长曝光模式。
在一个实施例中,所述处理器801在控制所述拍摄装置基于所述变焦模式和所述曝光模式同时进行曝光和变焦时,执行如下操作:基于所述当前环境亮度信息、所述变焦参数和所述曝光模式确定曝光参数,所述曝光参数包括曝光次数、每次曝光对应的曝光时间以及每次曝光对应的曝光值;控制所述拍摄装置基于所述变焦参数和所述曝光参数同时进行曝光和变焦。
在一个实施例中,所述处理器801被配置用于调用所述程序指令时还执行:监测所述拍摄装置的焦距变化情况和曝光情况,以判断拍摄是否成功;若所述焦距变化情况与所述变焦参数所指示的焦距变化相匹配,且所述曝光情况与所述曝光参数所指示的曝光情况相匹配,则确定拍摄成功;若所述焦距变化情况与所述变焦参数所指示的焦距变化不匹配,和/或所述曝光情况与所述曝光参数所指示的曝光情况不匹配,则确定拍摄不成功。
在一个实施例中,当所述曝光模式为所述短曝光模式时,所述处理器801在基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像时,执行如下操作:获取所述拍摄装置得到的初始爆炸式图像,所述初始爆炸式图像的数量为至少两张;对所述初始爆炸式图像进行图像合成处理,以得到爆炸式图像。
在一个实施例中,所述处理器801在对所述初始爆炸式图像进行图像合成处理,以得到爆炸式图像时,执行如下操作:对所述初始爆炸式图像进行预处理,得到预处理图像,所述预处理图像中包括的各个预处理图像具有相同的图像亮度和几何参数;对所述预处理图像进行合成处理,得到爆炸式图像。
在一个实施例中,所述处理器801被配置用于调用所述程序指令时还执行:判断拍摄是否成功;若拍摄成功,则输出所述爆炸式图像;若拍摄失败,则输出拍摄失败提示信息。
在一个实施例中,所述处理器801在判断拍摄是否成功时,执行如下操作: 根据所述曝光的结束时间和所述变焦的结束时间判断拍摄是否成功;若所述曝光的结束时间和所述变焦的结束时间之差在预设时间阈值之内则判断拍摄成功,否则,判断拍摄失败。
在一个实施例中,所述处理器801被配置用于调用所述程序指令时还执行:监测所述移动平台的运行状态;所述处理器在在判断拍摄是否成功时,执行如下操作:若所述移动平台的运行状态符合预设拍摄条件,则确定拍摄成功;若所述移动平台的运行状态不符合预设拍摄条件,则确定拍摄不成功。
在一个实施例中,所述处理器801被配置用于调用所述程序指令时还执行:获取所述移动平台的运行状态;若所述移动平台的运行状态满足预设状态条件,则执行所述基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦的步骤;其中,所述预设状态条件包括所述移动平台处于悬停状态。
参考图9,为本发明实施例提供的一种拍摄设备的结构示意图,图9所示的拍摄设备可包括模式解译器901、参数配置器902、变焦装置903和曝光装置904。
可选的,所述模式解译器901用于接收外部模块发送的爆炸式拍摄的拍摄指令,并解译所述拍摄指令,获得变焦参数和曝光参数。其中,所述外部模块可以是任何与所述拍摄设备相连接的设备,比如无人机、遥控器、无人车等。
在一种实施方式中,所述拍摄指令可包括爆炸式拍摄时所需的变焦模式和曝光模式,所述模式解译器901对所述拍摄指令中的变焦模式和曝光模式进行解译,得到变焦参数和曝光参数。在另一种实施方式中,所述拍摄指令中只包括变焦模式,所述模式解译器901还用于根据所述变焦模式确定所述爆炸式拍摄时所需的曝光模式,进一步的,对变焦模式和曝光模式进行解译,得到变焦参数和曝光参数。
其中,变焦模式包括匀速变焦和变速变焦,所述变速变焦包括加速变焦和减速变焦,所述变焦参数可包括变焦时间和变焦范围;曝光模式可包括长曝光和短曝光,所述曝光参数可包括曝光次数、每次曝光对应的曝光时间以及每次曝光对应的曝光值。
在一个实施例中,模式解译器901还用于将所述变焦参数和曝光参数传送给参数配置器902,由参数配置器902进行相应的参数配置,并向变焦装置903 和曝光装置904分别发送启动指令。
在一个实施例中,变焦装置903可包括变焦控制器9031、变焦传动器9032和变焦器9033,所述变焦控制器9031用于接收所述参数配置器902发送的启动指令,并根据参数配置器902中配置的变焦参数生成变焦控制指令。所述变焦控制器9031还用于将变焦控制指令发送给变焦传动器9032,由变焦传动器9032根据变焦参数控制变焦器9033进行变焦控制,也即控制焦距状态。应当理解的,通过控制变焦器9033(比如变焦环)可以改变拍摄设备的焦距状态,也就是说通过控制变焦器变化可以实现变焦控制。
在一个实施例中,所述变焦器9033可用于获取拍摄设备的焦距状态,并将焦距状态反馈给变焦控制器9031,以辅助变焦控制器9031进行变焦控制。可选的,变焦模块903还可以包括焦距状态监视器9034,所述焦距状态监视器9034用于接收变焦器9033反馈的焦距状态,并将焦距状态发送给变焦控制器9031。
在一个实施例中,变焦控制器9031还用于根据接收到的焦距状态分析变焦控制结果,并将所述变焦控制结果反馈给参数配置器902,由参数配置器902对变焦控制结果进行分析判断,以确定是否按照拍摄指令中的变焦模式进行变焦。参数配置器902还用于将变焦控制结果反馈给模式解译器901,由模式解译器901将变焦控制结果反馈给外部模块,以使得外部模块根据变焦控制结果判断是否输出拍摄设备所得的爆炸式图像或者重新发送拍摄指令。
在一个实施例中,曝光装置904可包括曝光控制器9041、曝光传动器9042和曝光器9043,曝光控制器9041用于接收参数配置器902发送的启动指令,并根据参数配置器902中的曝光参数生成曝光控制指令。所述曝光控制器9041还用于将所述曝光控制指令发送给曝光传动器9042,由曝光传动器9042根据曝光参数控制曝光器9043进行曝光控制。应当理解的,通过控制曝光器9043(比如快门)可以控制拍摄设备的曝光状态。
在一个实施例中,所述曝光器9043可用于获取拍摄设备的曝光状态,并将曝光状态反馈给曝光控制器9041,以辅助曝光控制器9041进行曝光控制。可选的,曝光模块904还可以包括曝光状态监视器9044,所述曝光状态监视器9044用于接收曝光器9043反馈的曝光状态,并将曝光状态发送给曝光控制器9041。
在一个实施例中,曝光控制器9041还用于根据接收到的曝光状态分析曝光 控制结果,并将曝光控制结果反馈给参数配置器902,由参数配置器902对曝光控制结果进行分析判断,以确定是否按照拍摄指令中的曝光模式进行曝光。参数配置器902还用于将变焦控制结果反馈给模式解译器901,由模式解译器901将曝光控制结果反馈给外部模块,以使得外部模块根据曝光控制结果判断是否输出拍摄设备所得的爆炸式图像或者重新发送拍摄指令。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程,是可以通过计算机程序来指令相关的硬件来完成,所述的程序可存储于一计算机可读取存储介质中,该程序在执行时,可包括如上述各方法的实施例的流程。其中,所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory,ROM)或随机存储记忆体(Random Access Memory,RAM)等。
以上所揭露的仅为本发明部分实施例而已,当然不能以此来限定本发明之权利范围,因此依本发明权利要求所作的等同变化,仍属本发明所涵盖的范围。
Claims (28)
- 一种拍摄方法,其特征在于,所述拍摄方法应用于移动平台中,所述移动平台上挂载有拍摄装置,所述方法包括:接收针对爆炸式拍摄的拍摄指令;基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像。
- 如权利要求1所述的方法,其特征在于,所述拍摄指令中包括所述拍摄装置同时进行曝光和变焦时的变焦模式;所述基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,包括:基于所述变焦模式确定所述拍摄装置同时进行曝光和变焦时的曝光模式;控制所述拍摄装置基于所述变焦模式和所述曝光模式同时进行曝光和变焦。
- 如权利要求2所述的方法,其特征在于,所述变焦模式包括匀速变焦和变速变焦,所述变速变焦包括加速变焦和减速变焦。
- 如权利要求2所述的方法,其特征在于,所述基于所述变焦模式确定所述拍摄装置同时进行曝光和变焦时的曝光模式,包括:采集拍摄目标所处环境的当前亮度信息;解译所述变焦模式对应的变焦参数,所述变焦参数包括变焦时间;基于所述变焦参数和所述当前亮度信息确定所述曝光模式。
- 如权利要求4所述的方法,其特征在于,所述曝光模式包括长曝光模式和短曝光模式,所述基于所述变焦参数和所述当前亮度信息确定所述曝光模式,包括:基于所述变焦时间和所述当前亮度信息,判断在所述长曝光模式下,所述拍摄装置是否符合过度曝光的条件;若所述拍摄装置符合所述过度曝光的条件,则确定所述曝光模式为短曝光模式;若所述拍摄装置不符合所述过度曝光的条件,则确定所述曝光模式为长曝光模式。
- 如权利要求4所述的方法,其特征在于,所述控制所述拍摄装置基于所述变焦模式和所述曝光模式同时进行曝光和变焦,包括:基于所述当前环境亮度信息、所述变焦参数和所述曝光模式确定曝光参数,所述曝光参数包括曝光次数、每次曝光对应的曝光时间以及每次曝光对应的曝光值;控制所述拍摄装置基于所述变焦参数和所述曝光参数同时进行曝光和变焦。
- 如权利要求6所述的方法,其特征在于,所述方法还包括:监测所述拍摄装置的焦距变化情况和曝光情况,以判断拍摄是否成功;若所述焦距变化情况与所述变焦参数所指示的焦距变化相匹配,且所述曝光情况与所述曝光参数所指示的曝光情况相匹配,则确定拍摄成功;若所述焦距变化情况与所述变焦参数所指示的焦距变化不匹配,和/或所述曝光情况与所述曝光参数所指示的曝光情况不匹配,则确定拍摄不成功。
- 如权利要求5所述的方法,其特征在于,当所述曝光模式为所述短曝光模式时,所述基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像,包括:获取所述拍摄装置得到的初始爆炸式图像,所述初始爆炸式图像的数量为至少两张;对所述初始爆炸式图像进行图像合成处理,以得到爆炸式图像。
- 如权利要求8所述的方法,其特征在于,所述对所述初始爆炸式图像进行图像合成处理,以得到爆炸式图像,包括:对所述初始爆炸式图像进行预处理,得到预处理图像,所述预处理图像中包括的各个预处理图像具有相同的图像亮度和几何参数;对所述预处理图像进行合成处理,得到爆炸式图像。
- 如权利要求1所述的方法,其特征在于,所述方法还包括:判断拍摄是否成功;若拍摄成功,则输出所述爆炸式图像;若拍摄失败,则输出拍摄失败提示信息。
- 如权利要求10所述的方法,其特征在于,所述判断拍摄是否成功,包括:根据所述曝光的结束时间和所述变焦的结束时间判断拍摄是否成功;若所述曝光的结束时间和所述变焦的结束时间之差在预设时间阈值之内则判断拍摄成功,否则,判断拍摄失败。
- 如权利要求10所述的方法,其特征在于,所述方法还包括:监测所述移动平台的运动状态;所述判断拍摄是否成功,包括:若所述移动平台的运行状态符合预设拍摄条件,则确定拍摄成功;若所述移动平台的运行状态不符合预设拍摄条件,则确定拍摄不成功。
- 如权利要求1所述的方法,其特征在于,所述基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦之前,所述方法还包括:获取所述移动平台的运行状态;若所述移动平台的运行状态满足预设状态条件,则执行所述基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦的步骤;其中,所述预设状态条件包括所述移动平台处于悬停状态。
- 一种移动平台,其特征在于,包括存储器、处理器和拍摄装置:所述存储器,用于存储程序代码;所述处理器,用于调用所述程序代码,当所述程序代码被执行时,用于执行以下操作:接收针对爆炸式拍摄的拍摄指令;基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像;所述拍摄装置,用于当接收到所述拍摄指令时,同时进行曝光和变焦以得到爆炸式图像。
- 如权利要求14所述的移动平台,其特征在于,所述拍摄指令包括所述拍摄装置同时进行曝光和变焦时的变焦模式,所述处理器在基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦时,执行如下操作:基于所述变焦模式确定所述拍摄装置同时进行曝光和变焦时的曝光模式;控制所述拍摄装置基于所述变焦模式和所述曝光模式同时进行曝光和变焦。
- 如权利要求15所述的移动平台,其特征在于,所述变焦模式包括匀速变焦和变速变焦,所述变速变焦包括加速变焦和减速变焦。
- 如权利要求15所述的移动平台,其特征在于,所述处理器在所述基于所述变焦模式确定所述拍摄装置同时进行曝光和变焦时的曝光模式时,执行如下操作:采集拍摄目标所处环境的当前亮度信息;解译所述变焦模式对应的变焦参数,所述变焦参数包括变焦时间、变焦范围;基于所述变焦参数和所述当前亮度信息确定所述曝光模式。
- 如权利要求17所述的移动平台,其特征在于,所述曝光模式包括长曝光模式和短曝光模式,所述处理器在基于所述变焦参数和所述当前亮度信息确 定所述曝光模式时,执行如下操作:基于所述变焦时间和所述当前亮度信息,判断在所述长曝光模式下,所述拍摄装置是否符合过度曝光的条件;若所述拍摄装置符合所述过度曝光的条件,则确定所述曝光模式为短曝光模式;若所述拍摄装置不符合所述过度曝光的条件,则确定所述曝光模式为长曝光模式。
- 如权利要求17所述的移动平台,其特征在于,所述处理器在控制所述拍摄装置基于所述曝光模式和所述变焦模式同时进行曝光和变焦时,执行如下操作:基于所述当前环境亮度信息、所述变焦参数和所述曝光模式确定曝光参数,所述曝光参数包括曝光次数、每次曝光对应的曝光时间以及每次曝光对应的曝光值;控制所述拍摄装置基于所述变焦参数和所述曝光参数同时进行曝光和变焦。
- 如权利要求19所述的移动平台,其特征在于,所述程序代码被执行时,还用于执行以下操作:监测所述拍摄装置的焦距变化情况和曝光情况,以判断拍摄是否成功;若所述焦距变化情况与所述变焦参数所指示的焦距变化相匹配,且所述曝光情况与所述曝光参数所指示的曝光情况相匹配,则确定拍摄成功;若所述焦距变化情况与所述变焦参数所指示的焦距变化不匹配,和/或所述曝光情况与所述曝光参数所指示的曝光情况不匹配,则确定拍摄不成功。
- 如权利要求18所述的移动平台,其特征在于,当所述曝光模式为所述短曝光模式时,所述处理器在基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦,以得到爆炸式图像时,执行如下操作:获取所述拍摄装置得到的初始爆炸式图像,所述初始爆炸式图像的数量为 至少两张;对所述初始爆炸式图像进行图像合成处理,以得到爆炸式图像。
- 如权利要求21所述的移动平台,其特征在于,所述处理器在对所述初始爆炸式图像进行图像合成处理,以得到爆炸式图像时,执行如下操作:对所述初始爆炸式图像进行预处理,得到预处理图像,所述预处理图像中包括的各个预处理图像具有相同的图像亮度和几何参数;对所述预处理图像进行合成处理,得到爆炸式图像。
- 如权利要求14所述的移动平台,其特征在于,所述程序代码被执行时,还用于执行以下操作:判断拍摄是否成功;若拍摄成功,则输出所述爆炸式图像;若拍摄失败,则输出拍摄失败提示信息。
- 如权利要求23所述的移动平台,其特征在于,所述处理器在判断拍摄是否成功时,执行如下操作:根据所述曝光的结束时间和所述变焦的结束时间判断拍摄是否成功;若所述曝光的结束时间和所述变焦的结束时间之差在预设时间阈值之内则判断拍摄成功,否则,判断拍摄失败。
- 如权利要求23所述的移动平台,其特征在于,所述程序代码被执行时,还用于执行以下操作:监测所述移动平台的运行状态;所述处理器在判断拍摄是否成功时,执行如下操作:若所述移动平台的运行状态符合预设拍摄条件,则确定拍摄成功;若所述移动平台的运行状态不符合预设拍摄条件,则确定拍摄不成功。
- 如权利要求14所述的移动平台,其特征在于,所述程序代码被执行时, 还用于执行以下操作:获取所述移动平台的运行状态;若所述移动平台的运行状态满足预设状态条件,则执行所述基于所述拍摄指令控制所述拍摄装置同时进行曝光和变焦的步骤;其中,所述预设状态条件包括所述移动平台处于悬停状态。
- 如权利要求14所述的移动平台,其特征在于,所述移动平台包括无人机、无人车、移动机器人、摄像机中的任意一个或多个。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质存储有计算机程序,所述计算机程序包括程序指令,所述程序指令当被处理器执行时使所述处理器执行如权利要求1-13任一项所述的拍摄方法。
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| CN105991911A (zh) * | 2016-07-29 | 2016-10-05 | 广东欧珀移动通信有限公司 | 控制方法、控制装置及电子装置 |
| CN109062400A (zh) * | 2018-07-06 | 2018-12-21 | 深圳臻迪信息技术有限公司 | 图像采集器的控制方法和装置 |
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| JP2013034167A (ja) * | 2011-06-28 | 2013-02-14 | Sony Corp | 情報処理装置、情報処理方法およびプログラム |
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| CN1461969A (zh) * | 2002-05-27 | 2003-12-17 | 金宝电子工业股份有限公司 | 应用变焦镜头及景深原理达成特效摄影的方法 |
| JP2010164716A (ja) * | 2009-01-14 | 2010-07-29 | Canon Inc | 撮像装置及び撮像装置の制御方法 |
| CN105765965A (zh) * | 2014-11-05 | 2016-07-13 | 奥林巴斯株式会社 | 摄像装置和摄像装置的控制方法 |
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| CN109062400A (zh) * | 2018-07-06 | 2018-12-21 | 深圳臻迪信息技术有限公司 | 图像采集器的控制方法和装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114584709A (zh) * | 2022-03-03 | 2022-06-03 | 北京字跳网络技术有限公司 | 变焦特效的生成方法、装置、设备及存储介质 |
| CN114584709B (zh) * | 2022-03-03 | 2024-02-09 | 北京字跳网络技术有限公司 | 变焦特效的生成方法、装置、设备及存储介质 |
| CN119810625A (zh) * | 2024-12-17 | 2025-04-11 | 青岛东润海颐智能科技有限公司 | 基于图像识别的机载地表雷、未爆弹药探测系统及其方法 |
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| Publication number | Publication date |
|---|---|
| CN110800286A (zh) | 2020-02-14 |
| CN110800286B (zh) | 2022-05-31 |
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