WO2017185485A1 - 投影设备的处理方法及装置、投影设备摄像头 - Google Patents

投影设备的处理方法及装置、投影设备摄像头 Download PDF

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Publication number
WO2017185485A1
WO2017185485A1 PCT/CN2016/085059 CN2016085059W WO2017185485A1 WO 2017185485 A1 WO2017185485 A1 WO 2017185485A1 CN 2016085059 W CN2016085059 W CN 2016085059W WO 2017185485 A1 WO2017185485 A1 WO 2017185485A1
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Prior art keywords
filter
infrared
instruction
projection device
receiving
Prior art date
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PCT/CN2016/085059
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English (en)
French (fr)
Inventor
张永亮
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中兴通讯股份有限公司
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Priority to KR1020187033769A priority Critical patent/KR20180135044A/ko
Priority to JP2018556812A priority patent/JP2019520598A/ja
Publication of WO2017185485A1 publication Critical patent/WO2017185485A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability
    • H04N9/3176—Constructional details thereof wherein the projection device is specially adapted for enhanced portability wherein the projection device is incorporated in a camera
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/317—Convergence or focusing systems

Definitions

  • the present invention relates to the field of projection, and in particular to a processing method and apparatus for a projection device, and a projection device camera.
  • the projector in the related art especially the micro projector, has realized autofocus in focusing on the optical machine, eliminating manual focusing; at the same time, the laser source dot matrix is also effectively recognized by infrared recognition means, so that the projection screen or After the infrared laser spot on the curtain wall is identified and the coordinates are calculated, the accurate spot coordinates are used to realize the manipulation of various application icons on the projection interface.
  • the projector in the related art has realized autofocus and laser spot recognition, it is realized by separately collecting visible light and infrared light by two cameras, and at least one camera lens corresponding to two independent visible and infrared light sensors inside.
  • the visible light and the infrared light are not separately identified by a single camera with only one light sensor to separately perform projection autofocus and laser spot automatic recognition.
  • Embodiments of the present invention provide a processing method and apparatus for a projection device, and a projection device camera, to at least solve the problem that the light sensor cannot be used to realize visible light recognition and infrared light recognition in the related art.
  • a processing method of a projection apparatus comprising: receiving a first instruction for indicating focusing on a projection device, and a second instruction for instructing infrared control of the projection device Setting a filter of the projection device to an infrared cut filter at a first time according to the first instruction, and setting the filter to a narrow band pass at a second time according to the second instruction; Infrared filter.
  • setting the filter of the projection device to the infrared cut filter at the first time according to the first instruction comprises: the filter currently used in the projection device is the narrow band pass near infrared When the filter is used, the narrow band pass near-infrared filter is switched to the infrared cut filter at a first time according to the first instruction; and/or, according to the second instruction, at a second time
  • Setting the filter as a narrow band pass near-infrared filter includes: when the filter currently used by the projection device is the infrared cut filter, according to the second instruction, the second time is The infrared cut filter is switched to the narrow band pass near infrared filter.
  • receiving the first instruction for indicating that the projection device is in focus comprises at least one of: Receiving the first instruction before the third time after the booting of the shadow device is completed; receiving the first instruction when detecting that the state of the acceleration sensor and/or the gyroscope of the projection device changes; Receiving the first instruction when the time is preset.
  • receiving the second instruction for indicating infrared control on the projection device includes at least one of: receiving the first instruction after a third time after the booting of the projection device is completed; detecting Receiving, by the infrared transmitting signal of the infrared emitting device of the projection device, the second instruction; receiving the second command when detecting the specified optical signal, wherein the wavelength of the specified optical signal is between infrared light and visible light And receiving the second instruction when the second preset time is reached.
  • the method further includes: collecting infrared light, and the infrared light is The coordinates on the projection screen are calculated to obtain coordinate values; an operation corresponding to the coordinate values is performed on a projection screen of the projection device according to a preset rule.
  • the method further includes: acquiring a projection image projected by the projection device; and the projection image Feature extraction is performed, and sharpness statistics and discrimination are performed to obtain an analysis result; and the focus position of the projection device is adjusted according to the analysis result.
  • a processing apparatus of a projection apparatus comprising: a receiving module, configured to receive a first instruction for indicating focusing on a projection device, and to indicate to the projection device a second instruction of the infrared control; a setting module, configured to set a filter of the projection device as an infrared cut filter at a first time according to the first instruction, and a second time according to the second instruction
  • the filter is configured as a narrow band pass near infrared filter.
  • the setting module includes: a first switching unit, configured to: when the filter currently used by the projection device is the narrowband pass near-infrared filter, according to the first instruction at a first time Switching the narrowband pass near-infrared filter to the infrared cut filter; and a second switching unit, when the filter currently used by the projection device is the infrared cut filter, according to The second command switches the infrared cut filter to the narrow band pass near infrared filter at a second time.
  • a first switching unit configured to: when the filter currently used by the projection device is the narrowband pass near-infrared filter, according to the first instruction at a first time Switching the narrowband pass near-infrared filter to the infrared cut filter
  • a second switching unit when the filter currently used by the projection device is the infrared cut filter, according to The second command switches the infrared cut filter to the narrow band pass near infrared filter at a second time.
  • a projection device camera including: a flexible circuit board FPC substrate, a light sensor, a processor, a filter, an optical prism, a lens, and the filter includes: an infrared cutoff a filter and a narrow band pass near infrared filter; the camera further comprising a power device for setting the filter as the infrared cut filter or the narrow band pass near infrared filter.
  • the power device further includes: a first power unit, configured to set the filter as the infrared cut filter when receiving a first instruction for indicating focusing on the projection device; And a second power unit configured to switch the filter to the narrowband pass near-infrared filter upon receiving a second command for instructing infrared control of the projection device.
  • a first power unit configured to set the filter as the infrared cut filter when receiving a first instruction for indicating focusing on the projection device
  • a second power unit configured to switch the filter to the narrowband pass near-infrared filter upon receiving a second command for instructing infrared control of the projection device.
  • a storage medium is also provided.
  • the storage medium is arranged to store program code for performing the following steps:
  • a filter of the projection device as an infrared cut filter at a first time according to the first instruction, and setting the filter to a narrow band pass near infrared at a second time according to the second instruction Filter.
  • the filter of the device is configured as an infrared cut filter, and the filter is set to a narrow band pass near-infrared filter at a second time according to the second instruction, due to the infrared cut filter passing through the visible light
  • the narrow-band near-infrared filter through infrared light is used for time-sharing setting, so that a single light sensor can be used to recognize visible light and infrared light, and the related art cannot use a light sensor to realize visible light recognition and infrared light recognition.
  • the problem is to save the material of the projection device and simplify the construction of the projection device on the basis of the same effect.
  • FIG. 1 is a block diagram showing the hardware structure of a projection device of a processing method of a projection device according to an embodiment of the present invention
  • FIG. 2 is a flow chart of a processing method of a projection device according to an embodiment of the present invention.
  • FIG. 3 is a block diagram showing the structure of a processing apparatus of a projection apparatus according to an embodiment of the present invention.
  • FIG. 4 is a block diagram showing an optional structure of a processing apparatus of a projection apparatus according to an embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of a projection device camera in accordance with an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of time-sharing imaging of visible light recognition and infrared recognition according to Embodiment 4;
  • FIG. 8 is a flowchart of motor driving according to Embodiment 4.
  • FIG. 10 is a flowchart of processing in a default visible light recognition state of a camera according to Embodiment 4;
  • FIG. 11 is a flow chart of processing in a default infrared recognition state of a camera according to Embodiment 4.
  • FIG. 1 is a block diagram of a hardware structure of a projection device of a processing method of a projection device according to an embodiment of the present invention.
  • the projection device 10 may include one or more (only shown in the figure)
  • the processor 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmission device 106 for communication functions.
  • a processing device such as a microprocessor MCU or a programmable logic device FPGA
  • FIG. 1 is merely illustrative and does not limit the structure of the above electronic device.
  • projection device 10 may also include more or fewer components than those shown in FIG. 1, or have a different configuration than that shown in FIG.
  • the memory 104 can be used to store software programs and modules of application software, such as program instructions/modules corresponding to the processing method of the projection device in the embodiment of the present invention, and the processor 102 executes by executing a software program and a module stored in the memory 104.
  • Memory 104 may include high speed random access memory, and may also include non-volatile memory such as one or more magnetic storage devices, flash memory, or other non-volatile solid state memory.
  • memory 104 may further include memory remotely located relative to processor 102, which may be connected to projection device 10 via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • Transmission device 106 is for receiving or transmitting data via a network.
  • the network specific examples described above may include a wireless network provided by a communication provider of the projection device 10.
  • the transmission device 106 includes a Network Interface Controller (NIC) that can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 106 can be a Radio Frequency (RF) module for communicating with the Internet wirelessly.
  • NIC Network Interface Controller
  • RF Radio Frequency
  • FIG. 2 is a flowchart of a processing method of a projection device according to an embodiment of the present invention. As shown in FIG. 2, the flow includes the following steps. :
  • Step S202 receiving a first instruction for indicating focusing on the projection device, and a second instruction for instructing the projection device to perform infrared control;
  • Step S204 the filter of the projection device is set as the infrared cut filter at the first time according to the first instruction, and the filter is set as the narrow band pass near-infrared filter at the second time according to the second instruction.
  • the filter of this embodiment includes at least two lenses of an infrared cut filter and a narrow band pass near infrared filter, but in actual use, only one of them is used as a lens through an external light source, and one of them is used as one Idle lenses and can switch to each other at any time.
  • the light sheet is time-divisionally set, so that a single light sensor can be used to recognize visible light and infrared light, which solves the problem that a light sensor cannot be used in the related art to realize visible light recognition and infrared light recognition, thereby saving material of the projection device.
  • the effect of the projection device construction is also simplified on the basis of the effect.
  • the execution body of the above steps may be a projector, an external control device of the projection device, or the like, but is not limited thereto.
  • setting the filter of the projection device to the infrared cut filter at the first time according to the first instruction comprises: the filter currently used by the projection device is a narrow band pass near infrared When the filter is used, the narrow band pass near-infrared filter is switched to the infrared cut filter at the first time according to the first instruction; and when the filter currently used by the projection device is the infrared cut filter, no switch is performed. Actions.
  • Setting the filter to the narrow band pass near-infrared filter at the second time according to the second instruction includes: when the filter currently used by the projection device is an infrared cut filter, according to the second instruction, the infrared is emitted at the second time The cut filter is switched to a narrow band pass near-infrared filter, and when the filter currently used by the projection device is a narrow band pass near-infrared filter, no switching action is performed.
  • the first instruction for receiving the indication for focusing on the projection device may include, but is not limited to, in the following case: at least one of the following:
  • Receiving the first instruction before the third time after the projection device is powered on it can be used as the default setting of the power-on;
  • a first instruction such as manually moving the projection device, when the state of the acceleration sensor and/or the gyroscope of the projection device is changed, the state of the sensor changes;
  • the first instruction is received. For example, when the time when the filter is switched in turn according to the cycle is reached.
  • the second instruction which may be, but is not limited to, receiving the indication for performing infrared control on the projection device, includes at least one of the following:
  • receiving the first instruction may be used as a default setting in the normal boot state of the projection device
  • the second instruction is received. For example, when the time when the filter is switched in turn according to the cycle is reached.
  • the infrared control operation is performed, including:
  • the focusing operation is performed, including:
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, can be embodied in the form of a software product stored in a storage medium. (e.g., ROM/RAM, disk, optical disk) includes instructions for causing a terminal device (which may be a cell phone, computer, server, or network device, etc.) to perform the methods of various embodiments of the present invention.
  • the processing device of the projection device is also provided in the embodiment, and the device is used to implement the above-mentioned embodiments and preferred embodiments, and the detailed description thereof has been omitted.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 3 is a structural block diagram of a processing apparatus of a projection apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes:
  • the receiving module 30 is configured to receive a first instruction for indicating that the projection device is in focus, and a second instruction for instructing the projection device to perform infrared control;
  • a setting module 32 configured to set a filter of the projection device as an infrared cut filter at a first time according to the first instruction, and set the filter to a narrow band pass near-infrared filter at a second time according to the second instruction sheet.
  • FIG. 4 is a block diagram showing an optional structure of a processing apparatus of a projection apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus 32 includes, in addition to all the modules shown in FIG.
  • the first switching unit 40 is configured to switch the narrowband pass near-infrared filter to the infrared cut filter at the first time according to the first instruction when the filter currently used by the projection device is a narrow band pass near-infrared filter. ;
  • the second switching unit 42 is configured to switch the infrared cut filter to the narrow band pass near-infrared filter at a second time according to the second instruction when the filter currently used by the projection device is an infrared cut filter.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • a projection device camera is also provided, which is used to implement the above-mentioned embodiments and preferred embodiments, and details have been omitted for description.
  • the term “module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • the camera includes: a flexible circuit board FPC substrate, a light sensor, a processor, a filter, an optical prism, a lens, and a filter.
  • the film includes: an infrared cut filter and a narrow band pass near infrared filter; and a power device for setting the filter as an infrared cut filter or a narrow band pass near infrared filter.
  • the power device further includes: a first power unit, configured to set the filter as an infrared cut filter when receiving the first instruction for indicating focusing on the projection device; and the second power unit, The filter is switched to a narrow band pass near infrared filter upon receiving a second command to instruct infrared control of the projection device.
  • a first power unit configured to set the filter as an infrared cut filter when receiving the first instruction for indicating focusing on the projection device
  • the second power unit The filter is switched to a narrow band pass near infrared filter upon receiving a second command to instruct infrared control of the projection device.
  • the present embodiment proposes a device for realizing autofocus and infrared recognition applications by using a single camera with only one light sensor carried by the projector to recognize visible light and infrared light in a time-sharing manner.
  • the technical invention of the device is that the camera of the single-light sensor of the dual-infrared filter is switched by the system software to realize the projection AF and the infrared spot coordinate positioning; the time-sharing switching simplifies the circuit design and reduces the overall camera. Cost, without any reduction in autofocus and infrared spot recognition efficiency.
  • Time-sharing switching of the projection AF responds with the preset process in the startup program or the movement vibration information transmitted by the acceleration sensor or the gyroscope. By recognizing the image sharpness, the motor displacement is scanned within a certain range to achieve a fast approximation sharpness compliance experience. value;
  • Time-sharing switching projection infrared spot recognition The information transmitted by the infrared remote control Bluetooth or the judgment information of the internal program starts the infrared recognition response, repeatedly responds to the light spot and calculates coordinates, realizes the mouse and gesture function, and replaces the writing use of the electronic whiteboard;
  • the infrared cut-off filter of visible light can be appropriately increased in range, and after pre-identification, it can be switched to the secondary screening identification of the infrared filter to realize automatic recognition of infrared light.
  • the controllable infrared filter camera used in the device of this embodiment is internally switched by an FPC substrate, a light sensor, and a dual infrared filter (corresponding to the filter in the above embodiment).
  • Power unit optical prism and lens.
  • the infrared filter is mainly customized in different specifications, and the auxiliary power device for switching the filter is added.
  • Infrared filter custom specifications are expressed in two infrared filters, one is an infrared cut filter, and the other is a narrow band pass near infrared filter (can also be a broadband all-pass filter, but requires software post-processing to increase More complicated filter treatment measures).
  • the switching power unit can be an electromagnetic, motor or other power source for switching between the two infrared filters. The switching power unit is controlled by the system center processor when to switch.
  • CMOS Complementary Metal Oxide Semiconductor
  • CCD Charge-coupled Device
  • infrared spectrum is very long, 780nm ⁇ 14um, 780nm ⁇ 1500nm is near infrared, the actual infrared light sensing is only a narrow part of the near infrared), switch to narrow band pass near infrared filter
  • the visible light is filtered out, and only infrared light of a typical value of 850 nm or 940 nm is allowed to pass.
  • This camera has only one light sensor, which can realize visible light and infrared recognition through time-sharing filter. Although the switching power unit and one filter are added, the overall cost is different than the dual camera and double sensor for inductive autofocus and infrared respectively. The cost of a single camera that senses visible and infrared cameras in a single sensor is still much lower. At the same time, the appearance of the face will be more compact than the dual camera. More importantly, the internal circuit connection is simpler. Only one soft cable and connector are required. Only one MIPI (Mobile Industry Processor Interface) line is required on the circuit board.
  • MIPI Mobile Industry Processor Interface
  • FIG. 6 is a schematic diagram of visible light recognition and infrared recognition time-sharing according to Embodiment 4.
  • the apparatus of the present embodiment places a camera of the above type at a close distance from the lens position, and although there is only one light inside.
  • Inductive sensor but because it is a broad-spectrum sensitization, visible light and infrared light can be separately sensed under the premise of controlling the dual-infrared filter by the central processor.
  • Visible light sensing is used to capture the image on the projection screen or the curtain wall, and the image sharpness is recognized by the central processor to determine whether the image is out of focus. Then, the motor drive module drives the motor to adjust the front and rear displacement of the optical lens to realize the autofocus of the optical machine. .
  • Infrared sensing is used to capture the infrared laser spot on the projection screen or curtain wall from a laser emitter.
  • the transmitter type can be a hand-held laser remote control, or it can be a single or multiple laser light source that is placed close to the top or bottom of the curtain or curtain wall and that emits parallel to the curtain or wall.
  • the light spot of the laser remote controller is sensed by the sensor and calculated by the central processor, thereby obtaining accurate spot coordinates for realizing manipulation of various application icons of the projection interface, including multi-touch, reaching Which "projection control effect.
  • This visible and infrared time-of-day sensing control is triggered by the system's software application.
  • This kind of application triggers the automatic triggering of internal programs in most cases (autofocus is set in the boot initialization program and the device moves vibration triggered by the acceleration sensor; infrared laser remote control built-in gyroscope with Bluetooth to transmit to the projector information trigger), a few manually Trigger with the display & touch interface connected to the central processor.
  • FIG. 7 is a flowchart of performing autofocus on a time-division switching dual-infrared filter according to Embodiment 4, as shown in FIG. 7, for a response autofocus event processing flow, including:
  • the processor responds by using a preset process in the startup program or a motion vibration information transmitted by an acceleration sensor or a gyroscope;
  • the central processor controls the camera power device to push the infrared cut filter, which is the default state in most cases;
  • the stepping motor is driven by the motor driving module through a specific algorithm to approximate the highest image sharpness.
  • the algorithm can be improved by the mature mathematical model, the binary approximation method, the zero approximation method, etc. The degree of compliance with the sharpness of the image is approached;
  • the motor pushes the light machine lens to achieve clear focus of the light machine.
  • FIG. 8 is a motor drive flowchart according to Embodiment 4, as shown in FIG. 8, the execution of the drive process includes:
  • the motor driving module acquires a central processor command through a serial port: if there is no command, the motor driving module remains in an idle state;
  • the motor driving module performs a central processor command function, and the driving motor displacement scans the edge value within a specific range;
  • the motor driving module sends the completion information through the serial port
  • the motor drive module enters idle state without receiving the command within the determined time.
  • FIG. 9 is a flowchart of calculating infrared point coordinates of a time-division switching dual-infrared filter according to Embodiment 4, as shown in FIG. 9, for a response response infrared recognition event processing flow, including:
  • the processor starts the infrared recognition response by using the information transmitted by the infrared remote control Bluetooth or the judgment information of the internal program;
  • the central processor controls the camera power device to push into the narrowband and near-infrared filter
  • the dynamic light spot (which may be a single light spot or a continuous light spot), repeatedly calculating the coordinates and responding, realizing the mouse function (the coordinate recognition of a single light spot is similar to the mouse single double click, the right key function), the continuous light spot
  • the coordinate recognition can realize the gesture function and can directly replace the writing purpose of the electronic whiteboard.
  • the laser remote control can transmit infrared recognition through the built-in gyroscope and via Bluetooth to the projector, for some laser arrays on the surface of the projection screen (multiple lasers) At the edge of the curtain, a laser that is parallel to the surface of the curtain is emitted to form an array.
  • a human finger or a special pointer prevents the laser array from forming a light spot on the surface of the screen, if the laser at the edge of the screen does not have a communication mechanism with the projection device, the projection device is required. The system software will automatically identify the mechanism to ensure that the infrared spot will not be detected when it appears.
  • the simplest mechanism is the timing switching recognition, because the camera switching power device always works back and forth, there will be a certain power consumption.
  • the partial spectrum of the near-infrared 850 nm will fall into the visible range (usually the infrared detector on the side of the road can see the red dot due to the red explosion phenomenon), so it can be triggered by visible light to trigger infrared laser recognition after the suspected infrared (switch to Infrared filter).
  • the 940nm infrared it is also possible to appropriately expand the spectral range in the infrared cut filter of the dual infrared filter, and trigger the switching of the narrow band pass infrared filter for the targeted infrared recognition when the infrared spot feature is detected.
  • Secondary discriminant, screening misjudgment it is also possible to pre-establish feature libraries such as fingers and pointers to extract features during visible light recognition.
  • feature libraries such as fingers and pointers
  • the infrared laser is triggered.
  • Identification in the case of a false positive, the switch that does not respond to the filter can be screened out).
  • This kind of secondary screening identification the electronic system reaction speed is far more than the human action consciousness, people can not detect, not only will not cause identification omission, but also achieve the effect of similar shooting "anti-shake", remove the unconscious non-directional click action. But this kind of Start-up identification should be limited, otherwise the Bluetooth transmission control response previously passed through the laser remote control will have a repetitive response.
  • the restriction strategy is: when pre-identification is performed, it is judged whether or not the gyroscope or geomagnetic sensor or other communication information transmitted from the remote controller or the external teleoperation device is received at the same time, and if received, the automatic switching to the infrared filter is started through the latter.
  • the secondary screening identification of the light sheet, or the communication information response processing of the external infrared transmitting device at the time of pre-identification has a higher priority.
  • the above process is as shown in FIG. 10, and FIG. 10 is a default visible light recognition state of the camera according to Embodiment 4. Processing flow chart.
  • FIG. 11 is the processing in the default infrared recognition state of the camera according to Embodiment 4.
  • the process is shown in Figure 11. Because the trigger of auto focus is usually when the projector is just turned on or is vibrated or moved, other scenes basically do not need to be activated.
  • infrared recognition can save the multiple conditions of the above-mentioned infrared filter startup work, and double infrared filter.
  • the infrared cut filter of the light sheet does not need to extend the spectral range.
  • Embodiments of the present invention also provide a storage medium.
  • the foregoing storage medium may be configured to store program code for performing the following steps:
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor performs, according to the stored program code stored in the storage medium, a first instruction for indicating that the projection device is in focus, and a second instruction for instructing the projection device to perform infrared control.
  • the processor executes, according to the stored program code in the storage medium, the filter of the projection device is set to the infrared cut filter at the first time according to the first instruction, and according to the second instruction.
  • the filter is set to a narrow band pass near infrared filter at a second time.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the processing method and device of the projection device of the present application and the camera of the projection device can be applied to the projection device, which solves the problem that the light sensor cannot be used to realize visible light recognition and infrared light recognition in the related art, and the material of the projection device is saved. Simplify the effect of the projection device construction on the basis of the same use effect.

Abstract

一种投影设备（10）的处理方法及装置、投影设备摄像头，其中，该方法包括：接收用于指示对投影设备（10）进行对焦的第一指令，以及用于指示对投影设备（10）进行红外控制的第二指令（S202）；根据第一指令在第一时间将投影设备（10）的滤光片设置为红外截止滤光片，以及根据第二指令在第二时间将滤光片设置为窄带通近红外滤光片（S204），解决了相关技术中不能使用一个光感应器来实现可见光识别与红外光线识别的问题。

Description

投影设备的处理方法及装置、投影设备摄像头
本申请要求于2016年4月29日提交中国专利局、申请号为201610289447.4的中国专利申请的优先权，以上全部内容通过引用结合在本申请中。
技术领域
本发明涉及投影领域，具体而言，涉及一种投影设备的处理方法及装置、投影设备摄像头。
背景技术
相关技术中的投影仪特别是微型投影仪在对光机对焦方面已经实现了自动对焦，免除了手动调焦；同时，对于激光光源点阵也通过红外识别手段实现了有效识别，使得投影幕布或幕墙上的红外激光光点经识别并计算坐标后，得出准确的光点坐标用于实现对投影界面各种应用图标的操控。
虽然相关技术中的投影仪已经实现自动对焦和激光光点识别，但其是通过两个摄像头分别采集可见光和红外光线实现，至少也是一个摄像头镜头对应内部两个独立的可见光和红外光感应器来实现，并未通过单一的仅有一个光感应器的摄像头分时识别可见光与红外光线以分别进行投影自动对焦和激光光点自动识别。
针对相关技术中存在的上述问题，目前尚未发现有效的解决方案。
发明内容
本发明实施例提供了一种投影设备的处理方法及装置、投影设备摄像头，以至少解决相关技术中不能使用一个光感应器来实现可见光识别与红外光线识别的问题。
根据本发明的一个实施例，提供了一种投影设备的处理方法，包括：接收用于指示对投影设备进行对焦的第一指令，以及用于指示对所述投影设备进行红外控制的第二指令；根据所述第一指令在第一时间将所述投影设备的滤光片设置为红外截止滤光片，以及根据所述第二指令在第二时间将所述滤光片设置为窄带通近红外滤光片。
可选地，根据所述第一指令在第一时间将所述投影设备的滤光片设置为红外截止滤光片包括：在所述投影设备当前使用的滤光片为所述窄带通近红外滤光片时，根据所述第一指令在第一时间将所述窄带通近红外滤光片切换为所述红外截止滤光片；和/或，根据所述第二指令在第二时间将所述滤光片设置为窄带通近红外滤光片包括：在所述投影设备当前使用的滤光片为所述红外截止滤光片时，根据所述第二指令在第二时间将所述红外截止滤光片切换为所述窄带通近红外滤光片。
可选地，接收用于指示对投影设备进行对焦的第一指令包括以下至少之一：在所述投 影设备开机完成后的第三时间前，接收所述第一指令；在检测到所述投影设备的加速度传感器和/或陀螺仪的状态发生变化时，接收所述第一指令；在到达第一预设时间时，接收所述第一指令。
可选地，接收用于指示对所述投影设备进行红外控制的第二指令包括以下至少之一：在所述投影设备开机完成后的第三时间后，接收所述第一指令；在检测到所述投影设备的红外线发射装置的射频信号时，接收所述第二指令；在检测到指定光信号时，接收所述第二指令，其中，所述指定光信号的波长介于红外光和可见光之间；在到达第二预设时间时，接收所述第二指令。
可选地，在根据所述第二指令在第二时间将所述红外滤光片切换为窄带通近红外滤光片之后，所述方法还包括：采集红外光，并对所述红外光在投影画面上的坐标进行计算得到坐标值；根据预设规则在所述投影设备的投影画面上执行与所述坐标值对应的操作。
可选地，在根据所述第一指令在第一时间将红外滤光片切换为红外截止滤光片之后，所述方法还包括：采集所述投影设备投影的投影图像；对所述投影图像进行特征提取，并进行锐利度统计和判别得到分析结果；根据所述分析结果调整所述投影设备的对焦位置。
根据本发明的另一个实施例，提供了一种投影设备的处理装置，包括：接收模块，用于接收用于指示对投影设备进行对焦的第一指令，以及用于指示对所述投影设备进行红外控制的第二指令；设置模块，用于根据所述第一指令在第一时间将所述投影设备的滤光片设置为红外截止滤光片，以及根据所述第二指令在第二时间将所述滤光片设置为窄带通近红外滤光片。
可选地，所述设置模块包括：第一切换单元，用于在所述投影设备当前使用的滤光片为所述窄带通近红外滤光片时，根据所述第一指令在第一时间将所述窄带通近红外滤光片切换为所述红外截止滤光片；第二切换单元，用于在所述投影设备当前使用的滤光片为所述红外截止滤光片时，根据所述第二指令在第二时间将所述红外截止滤光片切换为所述窄带通近红外滤光片。
根据本发明的又一个实施例，提供了一种投影设备摄像头，包括：柔性电路板FPC基板、光感应器、处理器、滤光片、光学棱镜、镜头，所述滤光片包括：红外截止滤光片和窄带通近红外滤光片；所述摄像头还包括动力装置，用于将所述滤光片设置为所述红外截止滤光片或所述窄带通近红外滤光片。
可选地，所述动力装置还包括：第一动力单元，用于在接收到用于指示对投影设备进行对焦的第一指令时将所述滤光片设置为所述红外截止滤光片；第二动力单元，用于在接收到用于指示对所述投影设备进行红外控制的第二指令时将所述滤光片切换为所述窄带通近红外滤光片。
根据本发明的又一个实施例，还提供了一种存储介质。该存储介质设置为存储用于执行以下步骤的程序代码：
接收用于指示对投影设备进行对焦的第一指令，以及用于指示对所述投影设备进行 红外控制的第二指令；
根据所述第一指令在第一时间将所述投影设备的滤光片设置为红外截止滤光片，以及根据所述第二指令在第二时间将所述滤光片设置为窄带通近红外滤光片。
通过本发明，接收用于指示对投影设备进行对焦的第一指令，以及用于指示对所述投影设备进行红外控制的第二指令，再根据所述第一指令在第一时间将所述投影设备的滤光片设置为红外截止滤光片，以及根据所述第二指令在第二时间将所述滤光片设置为窄带通近红外滤光片，由于对通过可见光的红外截止滤光片和通过红外光的窄带通近红外滤光片进行分时设置，因此使用单个光感应器可以识别可见光和红外光，解决了相关技术中不能使用一个光感应器来实现可见光识别与红外光线识别的问题，达到节省投影设备的材料，在同样使用效果的基础上简化投影设备构造的效果。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是本发明实施例的一种投影设备的处理方法的投影设备的硬件结构框图；
图2是根据本发明实施例的投影设备的处理方法的流程图；
图3是根据本发明实施例的投影设备的处理装置的结构框图；
图4是根据本发明实施例的投影设备的处理装置的可选结构框图；
图5是根据本发明实施例的投影设备摄像头的剖面示意图；
图6是根据实施例4的可见光识别和红外识别分时摄像示意图；
图7是根据实施例4的分时切换双红外滤光片进行自动对焦流程图；
图8是根据实施例4的马达驱动流程图；
图9是根据实施例4的分时切换双红外滤光片进行红外光点坐标计算流程图；
图10是根据实施例4的摄像头缺省可见光识别状态下的处理流程图；
图11是根据实施例4的摄像头缺省红外识别状态下的处理流程。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
实施例1
本申请实施例一所提供的方法实施例可以在移动终端、计算机终端或者类似的运算装置中执行。以运行在投影设备上为例，图1是本发明实施例的一种投影设备的处理方法的投影设备的硬件结构框图。如图1所示，投影设备10可以包括一个或多个(图中仅示出 一个)处理器102(处理器102可以包括但不限于微处理器MCU或可编程逻辑器件FPGA等的处理装置)、用于存储数据的存储器104、以及用于通信功能的传输装置106。本领域普通技术人员可以理解，图1所示的结构仅为示意，其并不对上述电子装置的结构造成限定。例如，投影设备10还可包括比图1中所示更多或者更少的组件，或者具有与图1所示不同的配置。
存储器104可用于存储应用软件的软件程序以及模块，如本发明实施例中的投影设备的处理方法对应的程序指令/模块，处理器102通过运行存储在存储器104内的软件程序以及模块，从而执行各种功能应用以及数据处理，即实现上述的方法。存储器104可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器104可进一步包括相对于处理器102远程设置的存储器，这些远程存储器可以通过网络连接至投影设备10。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置106用于经由一个网络接收或者发送数据。上述的网络具体实例可包括投影设备10的通信供应商提供的无线网络。在一个实例中，传输装置106包括一个网络适配器(Network Interface Controller，NIC)，其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中，传输装置106可以为射频(Radio Frequency，RF)模块，其用于通过无线方式与互联网进行通讯。
在本实施例中提供了一种运行于上述投影设备的投影设备的处理方法，图2是根据本发明实施例的投影设备的处理方法的流程图，如图2所示，该流程包括如下步骤：
步骤S202，接收用于指示对投影设备进行对焦的第一指令，以及用于指示对投影设备进行红外控制的第二指令；
步骤S204，根据第一指令在第一时间将投影设备的滤光片设置为红外截止滤光片，以及根据第二指令在第二时间将滤光片设置为窄带通近红外滤光片。
本实施例的滤光片至少包括红外截止滤光片和窄带通近红外滤光片两块镜片，但在实际使用过程中，只将其中之一作为通过外界光源的镜片，其与之一作为空闲镜片，并随时可以相互切换。
通过上述步骤，接收用于指示对投影设备进行对焦的第一指令，以及用于指示对投影设备进行红外控制的第二指令，再根据第一指令在第一时间将投影设备的滤光片设置为红外截止滤光片，以及根据第二指令在第二时间将滤光片设置为窄带通近红外滤光片，由于对通过可见光的红外截止滤光片和通过红外光的窄带通近红外滤光片进行分时设置，因此使用单个光感应器可以识别可见光和红外光，解决了相关技术中不能使用一个光感应器来实现可见光识别与红外光线识别的问题，达到节省投影设备的材料，在同样使用效果的基础上简化投影设备构造的效果。
可选地，上述步骤的执行主体可以为投影仪，投影设备的外部控制装置等，但不限于此。
在根据本实施例的可选实施方式中，根据第一指令在第一时间将投影设备的滤光片设置为红外截止滤光片包括：在投影设备当前使用的滤光片为窄带通近红外滤光片时，根据第一指令在第一时间将窄带通近红外滤光片切换为红外截止滤光片；而在投影设备当前使用的滤光片为红外截止滤光片时，则不作切换的动作。根据第二指令在第二时间将滤光片设置为窄带通近红外滤光片包括：在投影设备当前使用的滤光片为红外截止滤光片时，根据第二指令在第二时间将红外截止滤光片切换为窄带通近红外滤光片，而在投影设备当前使用的滤光片为窄带通近红外滤光片时，则不作切换的动作。
可选地，可以但不限于为在以下的情况下，接收用于指示对投影设备进行对焦的第一指令包括以下至少之一：
在投影设备开机完成后的第三时间前，接收第一指令，可以作为开机默认设置；
在检测到投影设备的加速度传感器和/或陀螺仪的状态发生变化时，接收第一指令，如手动移动投影设备，则感应器的状态会发生变化；
在到达第一预设时间时，接收第一指令。如，根据周期轮流切换滤光片的时间到达时。
可选地，可以但不限于为在以下的情况下，接收用于指示对投影设备进行红外控制的第二指令包括以下至少之一：
在投影设备开机完成后的第三时间后，接收第一指令，可以作为投影设备正常开机状态下的默认设置；
在检测到投影设备的红外线发射装置的射频信号时，接收第二指令，可以使用红外线接收器进行检测；
在检测到指定光信号时，接收第二指令，其中，指定光信号的波长介于红外光和可见光之间，光信号从可见光变为红外光时，提前接收第二指令；
在到达第二预设时间时，接收第二指令。如，根据周期轮流切换滤光片的时间到达时。
在根据本实施例的可选实施方式中，在根据第二指令在第二时间将红外滤光片切换为窄带通近红外滤光片之后，执行红外控制操作，包括：
S11，采集红外光，并对红外光在投影画面上的坐标进行计算得到坐标值；
S12，根据预设规则在投影设备的投影画面上执行与坐标值对应的操作。
在根据本实施例的可选实施方式中，在根据第一指令在第一时间将红外滤光片切换为红外截止滤光片之后，执行对焦操作，包括：
S21，采集投影设备投影的投影图像；
S22，对投影图像进行特征提取，并进行锐利度统计和判别得到分析结果；
S23，根据分析结果调整投影设备的对焦位置。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质 (如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例的方法。
实施例2
在本实施例中还提供了一种投影设备的处理装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图3是根据本发明实施例的投影设备的处理装置的结构框图，如图3所示，该装置包括：
接收模块30，用于接收用于指示对投影设备进行对焦的第一指令，以及用于指示对投影设备进行红外控制的第二指令；
设置模块32，用于根据第一指令在第一时间将投影设备的滤光片设置为红外截止滤光片，以及根据第二指令在第二时间将滤光片设置为窄带通近红外滤光片。
图4是根据本发明实施例的投影设备的处理装置的可选结构框图，如图4所示，该装置除包括图3所示的所有模块外，设置模块32包括：
第一切换单元40，用于在投影设备当前使用的滤光片为窄带通近红外滤光片时，根据第一指令在第一时间将窄带通近红外滤光片切换为红外截止滤光片；
第二切换单元42，用于在投影设备当前使用的滤光片为红外截止滤光片时，根据第二指令在第二时间将红外截止滤光片切换为窄带通近红外滤光片。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
实施例3
在本实施例中还提供了一种投影设备摄像头，该设备用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图5是根据本发明实施例的投影设备摄像头的剖面示意图，如图5所示，该摄像头包括：柔性电路板FPC基板、光感应器、处理器、滤光片、光学棱镜、镜头，滤光片包括：红外截止滤光片和窄带通近红外滤光片；动力装置，用于将滤光片设置为红外截止滤光片或窄带通近红外滤光片。
可选的，动力装置还包括：第一动力单元，用于在接收到用于指示对投影设备进行对焦的第一指令时将滤光片设置为红外截止滤光片；第二动力单元，用于在接收到用于指示对投影设备进行红外控制的第二指令时将滤光片切换为窄带通近红外滤光片。
实施例4
本实施例提出了一种通过投影仪所携带的单一的仅有一个光感应器的摄像头分时识别可见光和红外光线实现自动对焦和红外识别应用的装置。本装置的技术发明点是：通过系统软件分时切换双红外滤光片的单光感应器的摄像头实现投影自动对焦和红外光点坐标定位；这种分时切换，简化电路设计，减低总体摄像头成本，丝毫不降低自动对焦和红外光点识别效率。
分时切换投影自动对焦以开机启动程序中预设流程或加速度传感器或陀螺仪传递的移动震动信息进行响应，通过识别图像锐利度驱动马达位移在特定范围内扫描边缘值实现快速逼近锐利度达标经验值；
分时切换投影红外光点识别通过红外遥控器蓝牙传递的信息或内部程序的判断信息启动红外识别响应，反复响应光点并计算坐标，实现鼠标、手势功能，替代电子白板的书写用途；
针对典型的850nm和940nm红外应用波段，可见光的红外截止滤光片可以范围适度增加，进行预识别后切换到红外滤光片二次筛选性识别，实现对红外光的自动识别。
如图5所示，本实施例的装置采用的可控红外滤光片摄像头内部由FPC基板、光感应器、双红外滤光片(对应于上述实施例中的滤光片)其附属的切换动力装置、光学棱镜和镜头组成。和相关技术中的摄像头相比，主要是红外滤光片定制规格不同，并增加了附属的切换滤光片的动力装置。红外滤光片定制规格表现在是两个红外滤光片，一个是红外截止滤光片，一个是窄带通近红外滤光片(也可以是宽带全通滤光片，但需要软件后处理增加较为复杂的滤光处理措施)。切换动力装置可以是电磁、电机或其他动力源，用于切换两种红外滤光片。切换动力装置由系统中心处理器控制在何时切换。
因为光感应器CMOS(Complementary Metal Oxide Semiconductor，互补金属氧化物半导体)和CCD(Charge-coupled Device，电荷耦合单元)对可见光和红外光都很敏感，能同时录下可见光和红外光。光线充分的情况下，为了得到色彩和曝光正常的图像(也就是人眼看到的样子)就需要把波长780nm以外的红外光滤除(可见光波长在350nm～770nm之间)，这就需要用红外截止滤光片。需要感光红外光线(红外光谱很长，780nm～14um，780nm～1500nm为近红外，实际投影常用的红外光感应只是近红外中的很窄的一个部分)时，切换到窄带通近红外滤光片，滤除可见光，仅允许典型值850nm或940nm的红外光线通过。
此摄像头只有一个光感应器，通过分时切换滤光片就可以实现可见光和红外识别，虽然增加了切换动力装置和一个滤光片，但总体成本比分别感应自动对焦和红外的双摄像头以及双光感应器的单摄像头分别感应可见光和红外的摄像头成本还是要降低很多。同时，外观面上比双摄像头也会显得更加简洁。更重要的是内部电路连接更简单，只需一个软连接线排线和连接器，电路板上也只需一路MIPI(Mobile Industry Processor Interface，移动产业处理器接口)线。
图6是根据实施例4的可见光识别和红外识别分时摄像示意图，如图6所示，本实施例装置在平行于镜头位置近距离放置一个上述类型的摄像头，其内部有虽然仅有一个光感应传感器，但因为是广谱感光，在经由中心处理器分时控制双红外滤光片的前提下，可以分别感应可见光和红外光线。
可见光感应用于捕捉投影幕布或幕墙上的影像，经过中心处理器进行图像锐利度识别，判读图像是否失焦，进而通过马达驱动模块驱动马达对光机镜头进行前后位移调整实现光机的自动对焦。
红外感应用于捕捉投影幕布或幕墙上的红外激光光点，该光点来自于激光发射器。发射器类型可以是手持式的激光遥控器，也可以是固定在幕布或幕墙顶端或底部放置的单一或多个发射平行贴近幕布或墙面的激光光源。激光遥控器的光点经感应器感应并经中心处理器进行计算，从而得出准确的光点坐标用于实现对投影界面各种应用图标的操控，包含多点触控，达到“指哪打哪”的投影操控效果。对于固定在幕布或幕墙顶端或底部的激光光源来说，当有人手或特制手持杆接近于幕布或幕墙面时，对激光形成反射，此反射点被感应并经处理器计算，也同样得出准确的光点坐标，也进而实现“指哪打哪”的投影操控效果。
这种可见光和红外的分时感应控制，是由系统的软件应用触发的。这种应用触发大多数情况下是内部程序自动触发(自动对焦在开机初始化程序设定以及设备移动震动经加速度传感器触发；红外激光遥控内置陀螺仪配合蓝牙传递给投影仪信息触发)，少数经由人工借助和中心处理器相连的显示&触控界面触发。
图7是根据实施例4的分时切换双红外滤光片进行自动对焦流程图，如图7所示，对于响应自动对焦事件处理流程，包括：
S701，处理器通过开机启动程序中预设流程或加速度传感器或陀螺仪传递的移动震动信息进行响应；
S702，中心处理器控制摄像头动力装置推入红外截止滤光片，这也是大多数情况下的缺省状态；
S703，对图像进行特征提取，进行锐利度统计分析并判别；
S704，通过特定算法快速通过马达驱动模块驱动步进马达，逼近图像锐利度最高值，这种算法可以是在成熟的数学模型基础上改进的二分逼近法，归零逼近法等等，通过最快速度逼近图像锐利度的达标经验值；
S705，马达推动光机镜头实现光机对焦清晰。
对于响应自动对焦事件中的马达驱动模块，其是通过串口和中心处理器交互，图8是根据实施例4的马达驱动流程图，如图8所示，其执行驱动过程包括：
S801，马达驱动模块通过串口获取中心处理器命令：如果没有命令，马达驱动模块保持空闲状态；
S802，有命令，马达驱动模块从空闲状态变更为普通模式状态；
S803，马达驱动模块执行中心处理器命令功能，驱动马达位移在特定范围内扫描边缘值；
S804，马达驱动模块通过串口发送完成信息；
S805，马达驱动模块确定时间内无接收命令则进入空闲。
图9是根据实施例4的分时切换双红外滤光片进行红外光点坐标计算流程图，如图9所示，对于响应响应红外识别事件处理流程，包括：
S901，处理器通过红外遥控器蓝牙传递的信息或内部程序的判断信息启动红外识别响应；
S902，中心处理器控制摄像头动力装置推入窄带同近红外滤光片；
S903，对红外光点进行坐标计算；
S904，根据坐标值，响应并触发整体应用中的后续环节；
S905，根据动态光点(可以是单一光点，也可以是连续光点)，反复计算坐标并响应，实现鼠标功能(单一光点的坐标识别类似实现鼠标单双击、右键功能)，连续光点的坐标识别更可以实现手势功能，可以直接替代电子白板的书写用途。
这种分时响应，就自动对焦和红外光点坐标计算的触发场景来说，自动对焦事件的触发通常是在投影仪刚开机或被震动或挪动位置变化的时候，红外光点识别事件是在投影仪稳定投影时触发，同时触发的几率大为降低。即便是偶尔同时触发，在主处理器处理速率非常高的情况下，通常用户是感知不到有响应延迟现象的。
特别地，针对红外光点识别，因为系统缺省是可见光识别，虽然激光遥控器可以通过内置陀螺仪并经蓝牙传递到投影仪启动红外识别，但对于一些投影幕布表面的激光阵列(多个激光器在幕布边缘发射贴近幕布表面平行的激光，形成阵列)，人手指或特制教鞭在幕布表面阻碍激光阵列形成光点时，如果幕布边缘的激光器没有和投影设备的通信机制，则就需要靠投影设备系统软件会针对性进行自动识别机制，确保红外光点出现时不会被漏检测。该机制最简单的是定时切换识别，因导致摄像头切换动力装置总是来回工作，会有一定的功耗。通常850nm近红外的部分光谱会落入可见光范围(通常马路边的红外探视仪因红爆现象人眼可以看到红点)，所以可以通过可见光预判为疑似红外后触发红外激光识别(切换到红外滤光片)。对于940nm红外来说，还可以在双红外滤光片的红外截止滤光片中适当扩展光谱范围，预检测到红外光点特征时触发切换窄带通红外滤光片进行针对性的红外识别(进行二次判别，筛选误判)；还可以预先建立手指、教鞭等特征库，在可见光识别过程中进行特征提取，当特征符合预置的可能会伴随红外光点特征库的特征时，触发红外激光识别(如属误判，则可以筛选掉不予响应滤光片的切换)。上述措施中，优选针对典型的850nm和940nm红外应用波段，可见光的红外截止滤光片可以范围适度增加，进行预识别后切换到红外滤光片二次筛选性识别，实现对红外光的自动识别。这种二次筛选性识别，电子系统反应速度远超人的动作意识，人无法觉察，不仅不会造成识别遗漏，还会达到类似拍摄“防抖”的效果，去除人无意识的无指向性的点击动作。但这种 启动识别应受到限制，否则前面通过激光遥控器的蓝牙传输控制响应会有重复响应的问题。限制策略在于：进行预识别时，判断有无同时收到从遥控器或外部遥操作装置传递的陀螺仪或地磁传感器或其他通信信息，如收到，则自动切换到通过后者进行启动红外滤光片二次筛选性识别，或者说预识别时外部红外发射装置的通信信息响应处理优先级更高，上述过程如图10所示，图10是根据实施例4的摄像头缺省可见光识别状态下的处理流程图。
可选的，一种更常见和更简洁的处理方式是，设定缺省识别态为红外识别，自动对焦设置为非常态，图11是根据实施例4的摄像头缺省红外识别状态下的处理流程，如图11所示。因为自动对焦的触发通常是在投影仪刚开机或被震动或挪动位置变化的时候，其他场景基本不用启动，缺省用红外识别可以省却上述红外滤光片启动工作的多重条件，同时双红外滤光片的红外截止滤光片无需扩展光谱范围。
本发明的实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以被设置为存储用于执行以下步骤的程序代码：
S1，接收用于指示对投影设备进行对焦的第一指令，以及用于指示对投影设备进行红外控制的第二指令；
S2，根据第一指令在第一时间将投影设备的滤光片设置为红外截止滤光片，以及根据第二指令在第二时间将滤光片设置为窄带通近红外滤光片。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行接收用于指示对投影设备进行对焦的第一指令，以及用于指示对投影设备进行红外控制的第二指令；
可选地，在本实施例中，处理器根据存储介质中已存储的程序代码执行根据第一指令在第一时间将投影设备的滤光片设置为红外截止滤光片，以及根据第二指令在第二时间将滤光片设置为窄带通近红外滤光片。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、 等同替换、改进等，均应包含在本发明的保护范围之内。
工业实用性
本申请投影设备的处理方法及装置、投影设备摄像头，可应用于投影设备中，解决了相关技术中不能使用一个光感应器来实现可见光识别与红外光线识别的问题，达到节省投影设备的材料，在同样使用效果的基础上简化投影设备构造的效果。

Claims (10)

  1. 一种投影设备的处理方法，其中，包括：
    接收用于指示对投影设备进行对焦的第一指令，以及用于指示对所述投影设备进行红外控制的第二指令；
    根据所述第一指令在第一时间将所述投影设备的滤光片设置为红外截止滤光片，以及根据所述第二指令在第二时间将所述滤光片设置为窄带通近红外滤光片。
  2. 根据权利要求1所述的方法，其中，
    根据所述第一指令在第一时间将所述投影设备的滤光片设置为红外截止滤光片包括：在所述投影设备当前使用的滤光片为所述窄带通近红外滤光片时，根据所述第一指令在第一时间将所述窄带通近红外滤光片切换为所述红外截止滤光片；和/或
    根据所述第二指令在第二时间将所述滤光片设置为窄带通近红外滤光片包括：在所述投影设备当前使用的滤光片为所述红外截止滤光片时，根据所述第二指令在第二时间将所述红外截止滤光片切换为所述窄带通近红外滤光片。
  3. 根据权利要求1所述的方法，其中，接收用于指示对投影设备进行对焦的第一指令包括以下至少之一：
    在所述投影设备开机完成后的第三时间前，接收所述第一指令；
    在检测到所述投影设备的加速度传感器和/或陀螺仪的状态发生变化时，接收所述第一指令；
    在到达第一预设时间时，接收所述第一指令。
  4. 根据权利要求1所述的方法，其中，接收用于指示对所述投影设备进行红外控制的第二指令包括以下至少之一：
    在所述投影设备开机完成后的第三时间后，接收所述第一指令；
    在检测到所述投影设备的红外线发射装置的射频信号时，接收所述第二指令；
    在检测到指定光信号时，接收所述第二指令，其中，所述指定光信号的波长介于红外光和可见光之间；
    在到达第二预设时间时，接收所述第二指令。
  5. 根据权利要求1所述的方法，其中，在根据所述第二指令在第二时间将所述红外滤光片切换为窄带通近红外滤光片之后，所述方法还包括：
    采集红外光，并对所述红外光在投影画面上的坐标进行计算得到坐标值；
    根据预设规则在所述投影设备的投影画面上执行与所述坐标值对应的操作。
  6. 根据权利要求1所述的方法，其中，在根据所述第一指令在第一时间将红外滤光片切换为红外截止滤光片之后，所述方法还包括：
    采集所述投影设备投影的投影图像；
    对所述投影图像进行特征提取，并进行锐利度统计和判别得到分析结果；
    根据所述分析结果调整所述投影设备的对焦位置。
  7. 一种投影设备的处理装置，其中，包括：
    接收模块，设置为接收用于指示对投影设备进行对焦的第一指令，以及用于指示对所述投影设备进行红外控制的第二指令；
    设置模块，设置为根据所述第一指令在第一时间将所述投影设备的滤光片设置为红外截止滤光片，以及根据所述第二指令在第二时间将所述滤光片设置为窄带通近红外滤光片。
  8. 根据权利要求7所述的装置，其中，所述设置模块包括：
    第一切换单元，设置为在所述投影设备当前使用的滤光片为所述窄带通近红外滤光片时，根据所述第一指令在第一时间将所述窄带通近红外滤光片切换为所述红外截止滤光片；
    第二切换单元，设置为在所述投影设备当前使用的滤光片为所述红外截止滤光片时，根据所述第二指令在第二时间将所述红外截止滤光片切换为所述窄带通近红外滤光片。
  9. 一种投影设备摄像头，包括：柔性电路板FPC基板、光感应器、处理器、滤光片、光学棱镜、镜头，其中，
    所述滤光片包括：红外截止滤光片和窄带通近红外滤光片；
    所述摄像头还包括动力装置，用于将所述滤光片设置为所述红外截止滤光片或所述窄带通近红外滤光片。
  10. 根据权利要求9所述的摄像头，其中，所述动力装置还包括：
    第一动力单元，用于在接收到用于指示对投影设备进行对焦的第一指令时将所述滤光片设置为所述红外截止滤光片；
    第二动力单元，用于在接收到用于指示对所述投影设备进行红外控制的第二指令时将所述滤光片切换为所述窄带通近红外滤光片。
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