KR20180135044A - PROCESSING METHOD AND APPARATUS FOR PROJECTION EQUIPMENT - Google Patents

Abstract

The present invention relates to a processing method, apparatus and projection facility camera of a projection facility 10, the method comprising: receiving a first command for instructing projection equipment 10 to proceed focusing; (S202) of receiving a second command for instructing infrared light control to be performed on the infrared light; Setting the optical filter of the projection apparatus 10 to an infrared cut-off optical filter at a first time according to a first command and setting the optical filter to a narrowband passing near-infrared optical filter at a second time according to a second command ; , And related arts solve the problem that visible light identification and infrared light identification can not be implemented using one optical sensor.

Description

PROCESSING METHOD AND APPARATUS FOR PROJECTION EQUIPMENT

The present application claims priority based on a Chinese patent application filed on Apr. 29, 2016, the application number of which is CN201610289447.4 and the entire contents of the Chinese patent application are hereby incorporated into the present application.

Field of the Invention [0002] The present invention relates to a projection field, and more particularly, to a method and apparatus for processing a projection apparatus, and a projection apparatus camera.

In the related art, a projector, in particular, a micro-type projector, has already achieved automatic focusing in the focusing direction of an optical instrument, eliminating the need for manual focusing, and also realizes effective identification of the laser light source dot matrix through infrared identification means, After calculating the coordinates via identification for the infrared laser light spot on the screen wall, the correct optical spot coordinates are obtained to implement manipulation control over the various application icons of the projection interface.

Although the projector of the related art has already realized the automatic focusing and the identification of the laser beam spot, in the related art, it is implemented by collecting the visible light and the infrared light respectively through two cameras, or at least one camera lens has two It is realized by corresponding to an independent visible light sensor and an infrared light sensor, and recognizes the visible light and the infrared light in a time division manner through one camera having only one optical sensor and performs automatic focusing of the projection and automatic identification of the laser light spot Do not proceed.

There is still no solution to the above problem in the related art.

It is an object of the present invention to provide a processing method, apparatus, and projection equipment camera of a projection equipment capable of at least resolving the problem that visible light identification and infrared light identification can not be realized using one optical sensor in the related art .

According to an embodiment of the present invention, there is provided a method of controlling a projection apparatus, comprising: receiving a first command for instructing a projection apparatus to proceed focusing, and receiving a second command for instructing the projection apparatus to proceed with infrared control; Setting an optical filter of the projection equipment at an infra-red cut-off optical filter at a first time in accordance with the first instruction and setting the optical filter at a second time to a narrowband near infrared optical filter in accordance with the second instruction The method comprising the steps of:

Optionally, the step of setting the optical filter of the projection facility to an infrared cut-off optical filter at a first time in accordance with the first instruction comprises the step of setting an optical filter currently used in the projection equipment to the narrowband near- Switching the narrow-band near-infrared optical filter to the infrared cut-off optical filter at a first time in accordance with the first command, and / or in response to the second command, Wherein the step of setting the infrared cut-off optical filter as a narrow band pass near-infrared optical filter comprises the steps of: when the optical filter currently used in the projection equipment is the infrared cut-off optical filter, Narrow-band near-infrared optical filter.

Optionally, the step of receiving a first command to instruct the projection equipment to proceed with focusing comprises the steps of: receiving the first command prior to a third time after the projection equipment completes booting; Receiving the first command when detecting that the state of the acceleration sensor and / or the gyro of the projection equipment has changed; Receiving the first command when a first preset time is reached; Or the like.

Optionally, receiving a second command to direct infrared control to the projection facility comprises receiving the first command after a third time after the projection facility completes booting; Receiving the second command when a radio frequency signal of the infrared radiation device of the projection equipment is detected; Receiving the second command when a designated optical signal is detected, the wavelength of the designated optical signal being located between infrared light and visible light; Receiving the second instruction when a second preset time is reached; Or the like.

Optionally, after switching the infrared optical filter to a narrow band pass near-infrared optical filter at a second time in accordance with the second instruction, the method comprises the steps of: collecting the infrared light and adjusting the coordinates of the infrared light on the projection screen to Calculating coordinates to obtain a coordinate value; Performing an operation corresponding to the coordinate value on a projection screen of the projection equipment in accordance with a preset rule; .

Optionally, after switching the infrared optical filter to an infrared cut-off optical filter at a first time in accordance with the first instruction, the method further comprises the steps of: collecting a projection image projected by the projection equipment; Performing feature extraction on the projection image, proceeding with sharpness statistics and discrimination to obtain analysis results; Adjusting a focusing position of the projection apparatus according to the analysis result; .

According to another embodiment of the present invention there is provided a method of controlling a projection system, comprising receiving a first command for directing focus to a projection facility and receiving a second command for directing infrared control to the projection facility, module; To set the optical filter of the projection facility to an infrared cut-off optical filter at a first time in accordance with the first command and to set the optical filter to a narrowband near infrared optical filter at a second time in accordance with the second command A setting module; And a processing unit for processing the projection equipment.

Optionally, the setting module is configured to set the narrowband passing near-infrared optical filter at a first time according to the first command when the optical filter currently used in the projection equipment is the narrowband passing near-infrared optical filter, A first switching unit configured to switch to an off optical filter; The second cutoff optical filter being configured to switch the infrared cutoff optical filter to the narrowband pass near infrared optical filter at a second time in accordance with the second command if the optical filter currently used in the projection facility is the infrared cutoff optical filter, A switching unit; .

According to another embodiment of the present invention, there is provided a projection equipment camera including an FPCB, an optical sensor, a processor, an optical filter, an optical prism, and a lens, wherein the optical filter includes an infrared cutoff optical filter, A filter; The camera further comprises a power plant for setting the optical filter to the infrared cut-off optical filter or the narrow-band near-infrared optical filter.

Optionally, the power unit includes a first power unit for setting the optical filter to the infrared cut-off optical filter when receiving a first command to direct the projection equipment to proceed focusing; A second power unit for switching the optical filter to the narrow band pass near-infrared optical filter when receiving a second command for instructing the projection equipment to proceed with infrared control; .

According to another embodiment of the present invention, there is provided a recording medium configured to store program codes for performing the following steps,

Receiving a first command to direct the projection equipment to proceed with focusing and to receive a second command to direct the projection equipment to proceed with infrared control,

Setting an optical filter of the projection equipment to an infrared cut-off optical filter at a first time in accordance with the first command and setting the optical filter to a narrowband near infrared optical filter at a second time in accordance with the second command; Media.

According to the present invention, after receiving a first command for instructing the projection equipment to proceed focusing, and a second command for instructing the projection equipment to proceed with infrared control, Setting an optical filter of the facility as an infrared cut-off optical filter and setting the optical filter to a narrow-band passing near-infrared optical filter at a second time according to a second command, setting an infrared cut-off optical filter for passing visible light, By performing the time division setting for the narrow-band pass near-infrared optical filter, one optical sensor can be used to identify visible light and infrared light, and in the related art, one optical sensor can be used to implement visible light and infrared light identification By solving the problem that can not be solved, it is possible to reduce the material of the projection equipment and, To implement a streamlining effect.

The drawings described herein are provided to further understand the present invention and constitute a part of this application. The illustrative embodiments of the present invention and the description thereof are for interpreting the present invention and do not constitute an undue limitation to the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a hardware block diagram of a projection apparatus in a method of processing a projection apparatus according to an embodiment of the present invention. Fig.
2 is a flowchart of a method of processing a projection apparatus according to an embodiment of the present invention.
3 is a structural block diagram of a processing apparatus of a projection apparatus according to an embodiment of the present invention.
4 is a selectable structural block diagram of a processing apparatus of a projection apparatus according to an embodiment of the present invention.
5 is a schematic cross-sectional view of a projection equipment camera according to an embodiment of the present invention.
Fig. 6 is a schematic diagram of visible light identification and infrared identification time-division imaging according to the fourth embodiment.
7 is a flowchart illustrating the automatic focusing operation in the time division switching dual infrared optical filter according to the fourth embodiment.
8 is a flow chart of the motor driving according to the fourth embodiment.
FIG. 9 is a flowchart illustrating the calculation of the infrared optical spot coordinates in the time division switching dual infrared optical filter according to the fourth embodiment.
Fig. 10 is a process flowchart in the camera default visible light identification state according to the fourth embodiment.
11 is a processing process in the camera default infrared ray identification state according to the fourth embodiment.

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. It should be noted that the features of the embodiments and the embodiments of the present application can be combined with each other within the scope not inconsistent with each other.

It should be noted that the terms " first ", " second ", and the like in the specification and claims of the present invention and the claims are for distinguishing between similar objects and not for describing a specified sequence or a subsequent sequence number.

Example 1

The method embodiment provided in the presently filed embodiment may be performed in a mobile terminal, a computer terminal or similar computing device. As an example of operation on the projection apparatus, Fig. 1 is a hardware structural block diagram of the projection equipment of the method of processing the projection equipment of the embodiment of the present invention. 1, the projection apparatus 10 may include one or more processors 102 (only one is shown in the figure) (the processor 102 may include a processing unit such as an MCU or FPGA, A memory 104 for storing data, and a transmission device 106 for a communication function. As one of ordinary skill in the art will appreciate, the structure shown in FIG. 1 is merely an example, and is not intended to be limiting as to the structure of the electronic device. For example, the projection apparatus 10 may include more or fewer elements than shown in FIG. 1, or may have a different specification than FIG.

The memory 104 is for storing software programs and modules of the application software, and may store program instructions / modules corresponding to the processing method of the projection equipment of the embodiment of the present invention, for example. Processor 102 performs various functional applications and data processing, i.e., implementing the method, by running software programs and modules stored in memory 104. [ The memory 104 may include a high speed RAM and may include non-volatile memory (e.g., one or more magnetic storage devices, flash memory or other non-volatile solid state memory). In some embodiments, the memory 104 may further include memory remotely installed with respect to the processor 102, which remote memory may be connected to the projection facility 10 via a network. Embodiments of the network may include, but are not limited to, the Internet, a corporate intranet, a LAN, a mobile communication network, and combinations thereof.

The transmission device 106 receives or transmits data via one network. A specific embodiment of the network may include a wireless network provided by a carrier of the projection facility 10. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which is connected to other network equipment through a base station and can communicate with the Internet. In one embodiment, the transmission device 106 may be a Radio Frequency (RF) module that communicates with the Internet via a wireless scheme.

FIG. 2 is a flowchart of a method of processing a projection apparatus according to an embodiment of the present invention. As shown in FIG. 2, the flow includes the following steps.

In step S202, a first command for instructing the projection equipment to proceed focusing, and a second command for instructing the projection equipment to proceed with infrared control.

In step S204, the optical filter of the projection equipment is set to the infrared cutoff optical filter at the first time according to the first command, and the optical filter is set to the narrowband passing near-infrared optical filter at the second time according to the second command .

In the optical filter of this embodiment, at least an infrared cut-off optical filter and a narrow-band near-infrared optical filter include two lenses, but in actual use, only one of them is used as a lens for passing an external light source, It is used as a lens and can be switched at any time.

Through the steps, after receiving a first command for instructing the projection equipment to proceed focusing, and a second command for instructing the projection equipment to proceed with infrared control, and for projecting at a first time according to the first command Setting an optical filter of the facility as an infrared cut-off optical filter and setting the optical filter to a narrow-band passing near-infrared optical filter at a second time according to a second command, setting an infrared cut-off optical filter for passing visible light, By performing the time division setting for the narrow-band pass near-infrared optical filter, one optical sensor can be used to identify visible light and infrared light, and in the related art, one optical sensor can be used to implement visible light and infrared light identification By solving the problem which can not be solved, it is possible to reduce the material of the projection equipment and to reduce the cost of the projection equipment Implement the effect of simplifying the castle.

Optionally, the subject of the step may be a projector, an external control device of the projection equipment, and the like, and the present invention is not limited thereto.

In the selectable embodiment of the present embodiment, the step of setting the optical filter of the projection facility to the infrared cut-off optical filter at a first time in accordance with the first instruction comprises the steps of: Switching a narrowband pass near infrared optical filter to an infrared cutoff optical filter at a first time according to a first command; When the optical filter currently used in the projection equipment is an infrared cut-off optical filter, does not proceed with the switching operation; . The step of setting the optical filter to the narrowband passing near-infrared optical filter at the second time in accordance with the second command comprises: when the optical filter currently used in the projection equipment is an infrared cut-off optical filter, Switching an infrared cut-off optical filter with a narrow band pass near-infrared optical filter; If the optical filter currently used in the projection equipment is a narrow band pass near-IR optical filter, do not proceed with the switching operation; .

Optionally, the step of receiving a first command for instructing the projection equipment to proceed with focusing, including but not limited to, in the following cases:

Receiving a first command (said step may be a boot default setting) before a third time after the projection facility completes booting;

Receiving a first command (e.g., when the projection equipment is manually moved, the state of the sensor may change) when detecting that the state of the acceleration sensor and / or the gyro of the projection equipment has changed;

When the first preset time is reached, receiving the first command (e.g., when the time to switch the optical filter by the rotation is reached according to the cycle); Or the like.

Optionally, the step of receiving a second instruction to direct infrared control to the projection facility, including but not limited to,

Receiving a first command after a third time after the projection facility completes booting (said step may be a default setting in a state in which the projection facility is normally booted);

Receiving a second command (which may be detected using an infrared receiver) when a radio frequency signal of the infrared radiator of the projection equipment is detected;

When the designated optical signal is detected, the second command is received; the wavelength of the designated optical signal is located between the infrared light and the visible light (when the optical signal is changed from visible light to infrared light, the second command is received in advance);

When the second preset time is reached, receiving the second command (e.g., when the time to switch the optical filter by the rotation is reached according to the period); Or the like.

In the selectable embodiment of the present embodiment, performing the infrared control operation after switching the infrared optical filter to the narrowband pass near-infrared optical filter at the second time in accordance with the second instruction includes the following steps .

In step S11, infrared light is collected, and coordinates of infrared light on the projection screen are calculated to obtain coordinate values.

In step S12, an operation corresponding to the coordinate value is performed on the projection screen of the projection equipment in accordance with the preset rule.

In the selectable embodiment of the present embodiment, the step of performing the focusing operation after switching the infrared optical filter to the infrared cut-off optical filter at the first time according to the first instruction comprises the following steps.

In step S21, the projection equipment collects the projected image to be projected.

In step S22, feature extraction is performed on the projected image, and sharpness statistics and discrimination are performed to obtain analysis results.

In step S23, the focusing position of the projection equipment is adjusted according to the analysis result.

Through the description of the above implementation, it is clear that the skilled artisan in the area can implement the method according to the embodiment by combining the software and the required general purpose hardware platform. Of course, it can be implemented via hardware, but in most cases the former is a more desirable implementation. Based on this understanding, the technical solution of the present invention may be implemented in the form of a software product that substantially or in part contributes to the prior art, and the computer software product may be stored on one recording medium (e.g. ROM / , A magnetic disk, or an optical disk), and performs the method of each embodiment of the present invention in a single terminal facility (which may be a cell phone, a computer, a server, or a network facility, etc.) including predetermined commands.

Example 2

In this embodiment, a processing apparatus of the projection apparatus is further provided, and the apparatus is for realizing the above-described embodiment and the preferred embodiment, and overlapping description will be omitted for the parts already described. The term " module " used below is a combination of software and / or hardware capable of implementing certain functions, although the device described in the embodiments below is preferably implemented in software, but may also be implemented in hardware or a combination of software and hardware It is self-evident.

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 Figure 3,

A receiving module (30) configured to receive a first command to direct the projection equipment to proceed with focusing and to receive a second command to direct infrared control to the projection facility;

A setting module configured to set the optical filter of the projection facility to an infrared cutoff optical filter at a first time in accordance with a first command and to set an optical filter at a second time to a narrowband pass near infrared optical filter in accordance with a second command 32); .

4 is a selectable structural block diagram of a processing apparatus of a projection apparatus according to an embodiment of the present invention. As shown in Figure 4, in addition to including all of the modules shown in Figure 3, the configuration module 32,

A first switching unit (40) configured to switch a narrow band pass near infrared optical filter to an infrared cut-off optical filter at a first time in accordance with a first command if the optical filter currently used in the projection facility is a narrow band pass near- );

A second switching unit (42) configured to switch an infrared cut-off optical filter to a narrow band pass near-infrared optical filter at a second time in accordance with a second command if the optical filter currently used in the projection facility is an infrared cut-off optical filter, ; .

It should be noted that each of the above modules may be implemented through software or hardware, and the latter may be implemented in the following manner, but not limited thereto: the modules may be all located on the same processor Or each of the modules is located in a different processor in a random combination fashion.

Example 3

The present embodiment further provides a projection equipment camera, which implements the above-described embodiment and the preferred embodiment, and a duplicated description will be omitted for the parts already described. The term " module " used below is a combination of software and / or hardware capable of implementing certain functions, although the device described in the embodiments below is preferably implemented in software, but may also be implemented in hardware or a combination of software and hardware It is self-evident.

5 is a schematic cross-sectional view of a projection equipment camera according to an embodiment of the present invention. 5, the camera includes a flexible printed circuit board (FPCB), an optical sensor, a processor, an optical filter, an optical prism, and a lens. The optical filter includes an infrared cutoff optical filter and a narrowband near- ; The camera further comprises a power device for setting the optical filter to an infrared cut-off optical filter or a narrowband near-infrared optical filter.

Optionally, the power unit comprises a first power unit configured to set the optical filter to an infrared cut-off optical filter when receiving a first command to direct the projection equipment to proceed focusing; A second power unit configured to switch the optical filter to a narrow band pass near-IR optical filter when receiving a second command to direct infrared control to the projection equipment; .

Fourth Embodiment

In this embodiment, an apparatus for implementing automatic focusing and infrared identification applications is proposed by identifying the visible visible light and the infrared light in a time division manner through a single camera having only one optical sensor carried by the projector. The technical inventions of the present invention implement projection autofocus and infrared optical spot coordinate positioning by switching the camera of one optical sensor of the dual infrared optical filter in a time division manner through the system software. This time division switching simplifies circuit design and reduces the cost of the entire camera, but does not degrade the auto focusing and infrared spot identification efficiency.

Time-division switching for projection auto-focusing proceeds by a preset flow of the boot operation program or by a motion vibration information transmitted by an acceleration sensor or a gyro, and the identification of the image sharpness allows the motor to move within a certain range By driving to displace and scan the edge value, the sharpness is implemented to approach the standard experience value at a high speed.

The time division switching for the projection infrared light spot identification is performed by operating the infrared identification response through the information transmitted in the Bluetooth system via the infrared remote control or the determination information of the internal program, by repeatedly responding to the optical spot and calculating the coordinates, Implement gesture functionality and replace writing for electronic whiteboards.

In the typical 850 nm and 940 nm infrared frequency bands, the range of the infrared cut-off optical filter of the visible light can be suitably increased, and after the preliminary identification, the infrared selective filter is switched to the secondary selective identification, Implement automatic identification.

5, the inside of the controllable infrared optical filter camera applied in the apparatus of this embodiment includes an FPC board, an optical sensor, a dual infrared optical filter (corresponding to the optical filter of the above embodiment) and a switching power unit , An optical prism and a lens. Compared to the camera of the related art, the main distinction is the customized specification of the infrared optical filter and the addition of the power device of the switching optical filter attached thereto. The customized specification of the infrared optical filter is realized by two infrared optical filters, one of which is an infrared cut-off optical filter and the other is a narrowband near infrared optical filter (which may be a broadband pre-pass optical filter, A relatively complicated filtering processing action is required). The switching power unit may be an electromagnetic, electric motor or other power source and is used to switch two infrared optical filters. The switching power unit controls when the system central processor is to be switched.

Optical Sensors CMOS (Complementary Metal Oxide Semiconductor) and CCD (Charge-coupled Device) are sensitive to both visible light and infrared light, so that visible light and infrared light can be simultaneously recorded. If sufficient light is available, infrared light outside the 780nm wavelength must be filtered (visible light wavelengths between 350nm and 770nm) in order to obtain a normal image of color and exposure (ie, human eyes) Should be used. Infrared light (the infrared spectrum is very long, 780nm ~ 14um, 780nm ~ 1500nm is near infrared, and infrared light sensitivity, which is often used in actual projections, is only a very narrow part of the near infrared light) Switching with an optical filter filters out visible light and passes only infrared light with a typical value of 850 nm or 940 nm.

The camera has only one optical sensor, and visible light and infrared identification can be realized through time-divisional switching of the optical filter. Although a switching power unit and an optical filter are added, a single camera equipped with a dual camera and a dual optical sensor sensitive to the automatic focusing and infrared rays, respectively, as a whole cost, It is much lower than cost. In addition, when viewed from the outside, it can be made more compact than a dual camera. More importantly, the connection of the internal circuitry becomes simpler, requiring only one soft connection wire and connector, and only one row of Mobile Industry Processor Interface (MIPI) wires on the circuit board.

6 is a time-division imaging model diagram of visible light identification and infrared identification according to the fourth embodiment. As shown in Fig. 6, in the apparatus of this embodiment, one camera of the above type is installed at a position parallel to the lens. Although only one optical sensor is installed in the camera, it can respond to visible light and infrared light based on the assumption that the central processor performs time division control on the dual infrared optical filter.

The visible light response is for capturing the projection curtain or the image on the screen wall and pushing the motor through the motor drive module by determining whether the image is out-focused by proceeding to image sharpness identification at the central processor, So that the automatic focusing of the optical device is realized.

Infrared radiation is for capturing an infrared laser light spot on a projection curtain or screen wall, which is emitted from a laser emitter. The radiator type may be a handheld laser remote control and may be one or more laser light sources that are fixedly attached to a curtain or screen wall ceiling or bottom and radiate proximate to the curtain or wall in close proximity. The light spot of the laser remote control implements operation control (including multi-point touch control) for various application icons of the projection interface by sensing the response of the sensor and acquiring accurate optical spot coordinates through calculation of the central processor, Where the operation control "to realize the projection operation control effect. When looking at a curtain or a screen wall ceiling or a laser light source secured to the bottom, when a human hand or a specially-made handheld rod approaches the curtain or screen wall, it creates a reflex for the laser, By calculating by the processor, it still obtains accurate optical spot coordinates and implements the projection manipulation control effect of " controlling where to point and manipulating ".

This time-division sensitive control of visible light and infrared light is triggered by the software application of the system. These application triggers are, in most cases, triggered automatically by the internal program (auto-focusing is triggered by an acceleration sensor during boot initiation program setup and facility movement vibration, and the infrared laser remote control embedded gyro is coupled with Bluetooth to transmit information triggers to the projector ) And, in a few cases, manually triggered using the display & touch interface connected to the central processor.

FIG. 7 is a flowchart illustrating a time division switching dual infrared optical filter automatic focusing according to the fourth embodiment. As shown in Fig. 7, in the processing process in response to the automatic focusing event, the following steps are included.

In step S701, the processor proceeds through the preset process of the boot operation program or through the vibration information transmitted from the acceleration sensor or the gyro.

In step S702, the central processor controls the camera power unit to push the infrared cut-off optical filter. This is also the default state in most cases.

In step S703, feature extraction is performed on the image, and sharpness statistics and determination are proceeded.

In step S704, the step motor is pushed through the motor drive module at a high speed through a specific algorithm to approach the maximum image sharpness. These algorithms can be based on a mature mathematical model based on the binary approximation method, the zero return approximation method, etc., and approach standard experience of image clarity at the fastest rate.

In step S705, the motor pushes the lens of the optical device to realize clear focusing of the optical device.

In the motor driving module responding to the automatic focusing event, the motor driving module performs the interaction with the central processor in a serial manner, and FIG. 8 is a flowchart of the motor driving according to the fourth embodiment. As shown in FIG. 8, the process of driving the motor driving module includes the following steps.

In step S801, the motor drive module acquires a central processor command in a serial manner, and if there is no command, the motor drive module maintains the idle state.

In step S802, when there is an instruction, the motor drive module changes from the idle state to the normal mode state.

In step S803, the motor drive module performs a central processor command function, drives the motor to displace within a certain range, and scans the edge value.

In step S804, the motor drive module transmits the completion information through the serial method.

In step S805, the motor drive module enters the idle state if no command is received within the set time.

FIG. 9 is a flowchart illustrating the calculation of the infrared optical spot coordinates in the time division switching dual infrared optical filter according to the fourth embodiment. As shown in Fig. 9, in the processing process in response to the infrared identification event, the following steps are included.

In step S901, the processor operates the infrared identification response through the information transmitted by the infrared remote controller through the Bluetooth system or the determination information of the internal program.

In step S902, the central processor controls the camera power unit to push-in the narrowband pass near-IR optical filter.

In step S903, coordinate calculation is performed on the infrared light spot.

In step S904, in response to the coordinate value, a subsequent processor in the entire application is responded and triggered.

In step S905, the mouse function is implemented by repeatedly calculating and responding to the coordinates of the dynamic light spot (which may be a single light spot and may be a continuous light spot) (the coordinates of a single light spot are identified by mouse one- Click and right button functions), and the coordinate identification of the continuous light spot can further implement the gesture function and directly replace the writing purpose of the whiteboard.

Given this time-division response, triggering scenarios for auto-focusing and infrared light spot coordinate calculations, auto-focusing events are typically triggered when the projector boots, vibrates, or moves, and an infrared light spot identification event Since the projector is triggered when it is projected stably, the probability of being triggered at the same time is greatly reduced. Even if it is occasionally triggered at the same time, in a situation where the processing speed of the main processor is very high, the user usually does not detect that there is a response delay phenomenon.

In particular, for infrared light spot identification, the system defaults to visible light identification, so that infrared identification can be activated by transmitting to the projector in a Bluetooth manner via a built-in gyro from a laser remote control, A plurality of laser devices radiate a laser parallel to the curtain surface at the curtain edge to form an array), when a finger or a special knife of a person inhibits the laser array from forming a light spot on the curtain surface, If the laser at the curtain edge does not have a mechanism for communication with the projection facility, the automatic identification mechanism must be individually advanced by the software of the projection facility system to prevent the infrared light spot from being missed at the time of appearance. The simplest case of this mechanism is the periodic switching identification, for example, and constant power consumption due to the constantly reciprocating operation of the camera switching power unit. Typically, some spectra of 850 nm near infrared rays are included in the visible light range (generally infrared light detectors on the street are visible to the human eye due to the red light explosion phenomenon), so that when the infrared light is suspected through visible light preliminary determination It then triggers infrared laser identification (switching to an infrared optical filter). By looking at the 940 nm infrared, it is possible to appropriately extend the spectral range in the infrared cut-off optical filter of the dual infrared optical filter and, when the infrared light spot feature is preliminarily detected, triggering switching to the narrow band pass infrared optical filter, To proceed with infrared identification (proceed to secondary discrimination and select misjudgment); If a feature corresponding to a predetermined one is accompanied by a feature of the infrared light spot feature library, the infrared laser identification (if it is judged to be a false judgment, So as not to respond to the switching of the optical filter). In the above measure, it is preferable to appropriately increase the range of the infrared cut-off optical filter of visible light for typical 850 nm and 940 nm infrared frequency bands, and after the preliminary identification, the infrared optical filter secondary selective identification To implement automatic identification of infrared light. In this secondary selective identification, the reaction speed of the electronic system is much faster than that of the human motion, so that a person can not detect it, thereby preventing the identification from being missed, Prevention " can be implemented, thereby eliminating the unconscious and non-directed clicking action of a person. However, this identification operation must be limited, otherwise, the Bluetooth transmission control response through the laser remote control will cause a redundant response problem. In the case of the preliminary identification, it is determined whether or not the gyro or geomagnetic sensor or other communication information transmitted from the remote control or the external remote control device has been received, and if it is received, The priority of the communication information response processing of the external infrared ray radiating apparatus can be further elevated when automatic switching is performed by proceeding to the filter secondary selective identification or when the preliminary identification is proceeded. 10 is a flowchart of the process of the camera default visible light identification state according to the fourth embodiment.

Optionally, a more common and more concise processing scheme is to set the default identification state to infrared identification and set the auto-focusing to a non-generic state. 11 is a processing process in the camera default infrared ray identification state according to the fourth embodiment. As shown in Fig. 11, auto focusing is typically triggered when the projector boots up quickly or vibrates or moves, and basically does not work in other scenarios. When the infrared identification is set as a default, the infrared optical filter can omit various conditions during operation and the infrared cut-off optical filter of the dual infrared optical filter does not need to extend the spectral range.

The embodiment of the present invention further provides a recording medium. Optionally, in this embodiment, the recording medium may be configured to store program code for performing the following steps,

In step S1, a first command for instructing the projection equipment to proceed focusing, and a second command for instructing the projection equipment to proceed with infrared control are received.

In step S2, the optical filter of the projection equipment is set to the infrared cutoff optical filter at the first time according to the first instruction, and the optical filter is set to the narrowband passing near-infrared optical filter at the second time according to the second instruction .

In this embodiment, the recording medium may be any medium capable of storing program codes such as a USB memory, a ROM (Read-Only Memory), a RAM (Random Access Memory), a removable disk, a magnetic disk, But is not limited thereto.

Optionally, in this embodiment, the processor is further configured to generate a first command to instruct the projection apparatus to proceed focusing according to the program code stored in the recording medium, and a second command to instruct the projection apparatus to proceed with infrared control, And performs a step of receiving an instruction.

Optionally, in this embodiment, the processor sets the optical filter of the projection facility to an infrared cut-off optical filter at a first time according to a first command, according to the program code stored in the recording medium, And a step of setting the optical filter to the narrow-band near-infrared optical filter at the second time.

Optionally, a specific example of this embodiment can refer to the above-described embodiment and the example described in the selectable embodiment, and redundant description is omitted in this embodiment.

Each module or each step of the invention as described above may be implemented by a general-purpose computing device, which may be concentrated on one computing device or distributed over a network consisting of a plurality of computing devices. Optionally, they may be implemented in computer-executable program code so that they can be stored in a storage device and executed by a computing device, and in some cases, initiated or described in a different order than described herein Or they may be fabricated as respective integrated circuit modules, or a plurality of the modules or steps may be fabricated as a single integrated circuit module, and the present invention is not limited to the combination of any specific hardware and software. It is evident to the skilled artisan in the field that it is not.

The above description is merely a preferred embodiment of the present invention, but it is not intended to limit the present invention, and various modifications and changes may be made to the present invention by those skilled in the art. Any modifications, equivalence, substitutions, and so on, which do not depart from the spirit and principle of the present invention, fall within the scope of protection of the present invention.

(Industrial applicability)

The processing method, apparatus and projection facility camera of the present invention can be applied to a projection apparatus, and by solving the problem that one optical sensor can not be used for visible light and infrared light identification in the related art, And simplifies the configuration of the projection equipment on the basis of the same use effect.

Claims (10)

Receiving a first command for instructing the projection apparatus to proceed focusing, and receiving a second command for instructing the projection apparatus to proceed with infrared control;
Setting an optical filter of the projection equipment at an infra-red cut-off optical filter at a first time in accordance with the first instruction and setting the optical filter at a second time to a narrowband near infrared optical filter in accordance with the second instruction Containing
Processing method of projection equipment.
The method according to claim 1,
Wherein setting the optical filter of the projection facility to an infrared cut-off optical filter at a first time in accordance with the first instruction comprises:
Switching the narrow-band near-infrared optical filter to the infrared cut-off optical filter at a first time in accordance with the first command if the optical filter currently used in the projection facility is the narrowband near-infrared optical filter And / or
Wherein the step of setting the optical filter to a narrowband near infrared optical filter at a second time in accordance with the second instruction comprises:
Switching the infrared cut-off optical filter to the narrow band pass near-infrared optical filter at a second time in accordance with the second instruction when the optical filter currently used in the projection facility is the infrared cut-off optical filter
Processing method of projection equipment.
The method according to claim 1,
The step of receiving a first command to direct the projection equipment to proceed with focusing comprises:
Receiving the first command a third time before the projection facility completes booting;
Receiving the first command when detecting that the state of the acceleration sensor and / or the gyro of the projection equipment has changed;
Receiving the first command when a first preset time is reached; Lt; RTI ID = 0.0 >
Processing method of projection equipment.
The method according to claim 1,
Wherein the step of receiving a second instruction for instructing the projection equipment to proceed with infrared control comprises:
Receiving the first command after a third time after the projection facility completes booting;
Receiving the second command when a radio frequency signal of the infrared radiation device of the projection equipment is detected;
Receiving the second command when a designated optical signal is detected, the wavelength of the designated optical signal being located between infrared light and visible light;
Receiving the second instruction when a second preset time is reached; Lt; RTI ID = 0.0 >
Processing method of projection equipment.
The method according to claim 1,
After switching the infrared optical filter to a narrowband near infrared optical filter at a second time in accordance with the second instruction,
Collecting infrared light, calculating coordinates of the infrared light on the projection screen to obtain a coordinate value;
Performing an operation corresponding to the coordinate value on a projection screen of the projection equipment in accordance with a preset rule; Further comprising
Processing method of projection equipment.
The method according to claim 1,
After switching the infrared optical filter to an infrared cut-off optical filter at a first time in accordance with the first instruction,
Collecting a projection image projected by the projection equipment;
Performing feature extraction on the projection image, proceeding with sharpness statistics and discrimination to obtain analysis results;
Adjusting a focusing position of the projection apparatus according to the analysis result; Further comprising
Processing method of projection equipment.
A receiving module configured to receive a first command to direct the projection equipment to proceed with focusing and to receive a second command to direct infrared control to the projection equipment;
To set the optical filter of the projection facility to an infrared cut-off optical filter at a first time in accordance with the first command and to set the optical filter to a narrowband near infrared optical filter at a second time in accordance with the second command A setting module; Containing
Processing equipment for projection equipment.
8. The method of claim 7,
Wherein the setting module comprises:
And a switch configured to switch the narrowband passing near-infrared optical filter to the infrared cut-off optical filter at a first time in accordance with the first command if the optical filter currently used in the projection equipment is the narrowband passing near- 1 switching unit;
The second cutoff optical filter being configured to switch the infrared cutoff optical filter to the narrowband pass near infrared optical filter at a second time in accordance with the second command if the optical filter currently used in the projection facility is the infrared cutoff optical filter, A switching unit; Containing
Processing equipment for projection equipment.
A projection equipment camera comprising an FPCB, an optical sensor, a processor, an optical filter, an optical prism, and a lens,
Wherein the optical filter comprises an infrared cutoff optical filter and a narrowband near infrared optical filter;
The camera further comprises a power device for setting the optical filter to the infrared cutoff optical filter or the narrowband pass near infrared optical filter
Projection Equipment Camera.
10. The method of claim 9,
The power unit includes:
A first power unit configured to set the optical filter to the infrared cut-off optical filter when receiving a first command to instruct the projection equipment to proceed focusing;
A second power unit configured to switch the optical filter to the narrow band pass near-IR optical filter when receiving a second command to direct infrared control to the projection equipment; Further comprising
Projection Equipment Camera.

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