WO2022253336A1 - 激光投影设备及投影图像的校正方法 - Google Patents
激光投影设备及投影图像的校正方法 Download PDFInfo
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- WO2022253336A1 WO2022253336A1 PCT/CN2022/097001 CN2022097001W WO2022253336A1 WO 2022253336 A1 WO2022253336 A1 WO 2022253336A1 CN 2022097001 W CN2022097001 W CN 2022097001W WO 2022253336 A1 WO2022253336 A1 WO 2022253336A1
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- 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
- H04N9/315—Modulator illumination systems
- H04N9/3161—Modulator illumination systems using laser light sources
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- 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]
- H04N9/3179—Video signal processing therefor
- H04N9/3185—Geometric adjustment, e.g. keystone or convergence
Definitions
- the present disclosure relates to the field of projection display, in particular to a laser projection device and a correction method for a projected image.
- the laser projection system includes a projection screen and laser projection equipment.
- the laser projection equipment can project pictures on the projection screen to realize functions such as video playback.
- the current laser projection equipment includes: a light source assembly, an optical machine and a lens.
- the light source assembly is used to provide a high-intensity laser illumination beam to the optical machine; the optical machine is used to modulate the image signal of the laser illumination beam to form a projection beam.
- the projection light beam formed after the optical machine modulation enters the lens; the lens is used to project the projection light beam onto the projection screen.
- some embodiments of the present disclosure provide a laser projection device, which includes a light source component, an optical engine, a lens, and a circuit system architecture.
- the light source assembly is configured to provide an illumination beam.
- the light engine is configured to modulate the illumination beam with the image signal to obtain the projection beam.
- the lens is configured to project the projection beam into an image; and the circuit system structure is configured to control the light source component to emit the illumination beam.
- the circuit architecture includes a first controller and a second controller.
- the first controller is configured to determine the adjusted position of the feature point in response to the adjustment operation of the user to adjust the position of any one of the feature points in the first projection image; and determine the second projection based on the initial position and the adjusted position of the feature point Correction data of the image; transmitting the correction data to the second controller.
- the second controller is coupled to the optical machine and the first controller, and is configured to receive the correction data, perform correction processing on the second projection image based on the correction data, and transmit the corrected processed second projection image to the optical machine. the image signal, so that the optical machine uses the image signal of the corrected second projection image to modulate the illumination beam to obtain the projection beam.
- some embodiments of the present disclosure provide a projection image correction method
- the correction method includes: first, the first controller determines The adjusted position of the feature point. Thereafter, the first controller determines correction data of the second projected image based on the adjusted positions of the feature points. Again, the first controller sends correction data to the second controller.
- the second controller receives the correction data, performs correction processing on the second projection image based on the correction data, and transmits an image signal of the second projection image after correction processing to the optical machine.
- the optical machine modulates the illuminating light beam by using the image signal of the corrected second projected image to obtain the projected light beam.
- the lens projects the projected light beam into an image.
- some implementations of the present disclosure provide a laser projection device, where the laser projection device includes a light source assembly, an optical engine, a lens, and a circuit system architecture.
- the light source assembly is configured to provide an illumination beam.
- the light engine is configured to modulate the illumination beam with the image signal to obtain the projection beam.
- the lens is configured to project the projection beam into an image; and the circuit system structure is configured to control the light source component to emit the illumination beam.
- the circuit system architecture includes a system-on-chip and a display control chip.
- the system level chip is configured to determine the adjusted position of the feature point in response to the adjustment operation of the user to adjust the position of any feature point in the first projection image; determine the second projection image based on the initial position and the adjusted position of the feature point The correction data; transmit the correction data to the display control chip.
- the display control chip is coupled to the optical machine and the system level chip, and is configured to receive the correction data, perform correction processing on the second projection image based on the correction data, and transmit the image signal of the corrected second projection image to the optical machine , so that the optical machine uses the corrected image signal of the second projection image to modulate the illumination beam to obtain the projection beam.
- FIG. 1 is a structural diagram of a laser projection device according to some embodiments of the present disclosure
- FIG. 2 is a schematic diagram of a light source assembly, an optical engine and a lens in a laser projection device according to some embodiments of the present disclosure
- FIG. 3 is a structural diagram of an optical path in a laser projection device according to some embodiments of the present disclosure
- FIG. 4 is a schematic diagram of the optical path principle of a light source assembly in a laser projection device according to some embodiments of the present disclosure
- FIG. 5 is an arrangement structure diagram of tiny mirror mirrors in a digital micromirror device according to some embodiments of the present disclosure
- Fig. 6 is a schematic diagram of the operation of a tiny mirror according to some embodiments of the present disclosure.
- Fig. 7 is the schematic diagram of the position of the swing of a tiny mirror in the digital micromirror device shown in Fig. 5;
- FIG. 8 is a schematic structural diagram of a laser projection device provided by an embodiment of the present disclosure.
- FIG. 9 is a schematic diagram of a first projection image provided by an embodiment of the present disclosure.
- FIG. 10 is a schematic diagram of a first feature point movement offset provided by an embodiment of the present disclosure.
- FIG. 11 is a schematic diagram of prompt information provided by an embodiment of the present disclosure.
- FIG. 12 is a schematic diagram of another prompt information provided by an embodiment of the present disclosure.
- FIG. 13 is a schematic structural diagram of another laser projection device provided by an embodiment of the present disclosure.
- FIG. 14 is a flow chart of a projection image correction method provided by an embodiment of the present disclosure.
- FIG. 15 is a flow chart of another projection image correction method provided by an embodiment of the present disclosure.
- FIG. 16 is a flow chart of another projection image correction method provided by an embodiment of the present disclosure.
- FIG. 17 is a schematic diagram of a second projection image beyond the range of the projection screen provided by an embodiment of the present disclosure.
- FIG. 18 is a schematic diagram of a second projected image not exceeding the range of the projected screen provided by an embodiment of the present disclosure.
- Some embodiments of the present disclosure provide a laser projection device.
- the light source assembly 100 is configured to provide an illumination beam (laser beam).
- the optical machine 200 is configured to use an image signal to modulate the illumination beam provided by the light source assembly 100 to obtain a projection beam.
- the lens 300 is configured to project the projection light beam on a screen or a wall to form an image.
- the light source assembly 100 , the light engine 200 and the lens 300 are sequentially connected along the beam propagation direction, and each is wrapped by a corresponding housing.
- the housings of the light source assembly 100 , the optical engine 200 and the lens 300 support the optical components and make the optical components meet certain sealing or airtight requirements.
- the light source assembly 100 is airtightly sealed through its corresponding housing, which can better improve the problem of light decay of the light source assembly 100 .
- One end of the light engine 200 is connected to the lens 300 and arranged along the first direction X of the whole machine, for example, the first direction X may be the width direction of the whole machine.
- the light source assembly 100 is connected to the other end of the optical machine 200 .
- the connection direction between the light source assembly 100 and the optical machine 200 is perpendicular to the connection direction between the optical machine 200 and the lens 300.
- this connection structure can adapt to the optical path characteristics of the reflective light valve in the optical machine 200, and on the other hand On the one hand, it is also beneficial to shorten the length of the optical path in one dimension, which is beneficial to the structural arrangement of the whole machine.
- the length of the optical path in this direction will be very long, which is not conducive to the whole machine. structure arrangement.
- the light source assembly 100 may include three laser arrays.
- the three laser arrays can be red laser array 130, green laser array 120 and blue laser array 110 respectively, that is, the light source assembly 100 is a three-color laser light source; but not limited thereto, the three laser arrays can also be The blue laser array 110 , or two laser arrays are the blue laser array 110 and one laser array is the red laser array 130 .
- the light source assembly 100 may also include two laser arrays.
- the two laser arrays can be a blue laser array 110 and a red laser array 130, that is, the light source assembly 100 is a two-color laser light source; they can also be both blue laser arrays 110, that is, the light source assembly 100 is a monochromatic laser light source.
- the light source assembly 100 can also include a laser array, that is, the light source assembly 100 is a monochromatic laser light source. In this monochromatic laser light source, referring to FIG. 4, the laser array can be a blue laser array 110 .
- the light source assembly 100 only includes the blue laser array 110, or only includes the blue laser array 110 and the red laser array 130, as shown in FIG.
- the blue laser 110 emits blue light
- a part of the blue light is irradiated on the fluorescent wheel 140 to generate red fluorescent light (when the light source assembly 100 includes the red laser array 130, it is not necessary to generate red fluorescent light) and green fluorescent light;
- red fluorescent light (or red laser) and green fluorescent light sequentially pass through the light combining mirror 160 and then pass through the color filter wheel 150 for color filtering, and output the three primary colors sequentially.
- red fluorescent light or red laser
- green fluorescent light sequentially pass through the light combining mirror 160 and then pass through the color filter wheel 150 for color filtering, and output the three primary colors sequentially.
- the human eye cannot distinguish the color of light at a certain moment, and what it perceives is still mixed white light.
- the optical machine 200 may include: a light guide 210 , a lens assembly 220 , a mirror 230 , a digital micromirror device (Digital Micromirror Device, DMD) 240 and a prism assembly 250 .
- the light pipe 210 can receive the illumination beam provided by the light source assembly 100 and homogenize the illumination beam.
- the lens assembly 220 can amplify the illumination light beam first, then converge it and output it to the reflector 230 .
- the mirror 230 can reflect the illumination beam to the prism assembly 250 .
- the prism assembly 250 reflects the illumination beam to the DMD 240 , and the DMD 240 modulates the illumination beam and reflects the modulated projection beam to the lens 300 .
- the DMD240 is the core component, and its function is to use the image signal to modulate the illumination beam provided by the light source assembly 100, that is, to control the illumination beam to display different colors and brightness for different pixels of the image to be displayed, so as to finally form an optical image, so the DMD240 is also known as a light modulation device or light valve.
- the light modulation device or light valve
- the light modulation device can be divided into a transmissive light modulation device (or light valve) or a reflective light modulation device (or light valve).
- the DMD240 shown in FIG. 2 and FIG. 3 reflects the illumination beam, which is a reflective light modulation device.
- the liquid crystal light valve transmits the illumination beam, so it is a transmissive light modulation device.
- the optomechanics can be divided into single-chip systems, two-chip systems or three-chip systems.
- the optical machine 200 can be called a single-chip system.
- the optical machine 200 can be called a three-chip system.
- the DMD240 is applied in a digital light processing (Digital Light Processing, DLP) projection architecture, and the optical machine 200 shown in FIG. 2 and FIG. 3 uses the DLP projection architecture.
- the DMD 240 includes thousands of tiny mirrors 2401 that can be individually driven to rotate. These tiny mirrors 2401 are arranged in an array, and each tiny mirror 2401 corresponds to a pixel in the image to be displayed.
- each tiny mirror 2401 is equivalent to a digital switch, which can swing within the range of plus or minus 12 degrees ( ⁇ 12°) or plus or minus 17 degrees ( ⁇ 17°) under the action of an external electric field, such as Figure 7 shows.
- the light reflected by the tiny mirror 2401 at a negative deflection angle is called OFF light, and the OFF light is invalid light, which usually hits the housing 101 of the complete machine, the housing of the optical machine 200 or absorbed by the light absorbing unit.
- the light reflected by the tiny reflective lens 2401 at a positive deflection angle is called ON light.
- the ON light is the effective light beam that the tiny reflective lens 2401 on the surface of the DMD240 receives the illumination light beam and enters the lens 300 at a positive deflection angle. for projection imaging.
- the open state of the micro-reflector 2401 is the state where the micro-reflector 2401 is and can be maintained when the illumination beam emitted by the light source assembly 100 is reflected by the micro-reflector 2401 and can enter the lens 300, that is, the micro-reflector 2401 is at a positive deflection angle status.
- the closed state of the tiny reflective mirror 2401 is the state where the tiny reflective mirror 2401 is and can be maintained when the illuminating light beam emitted by the light source assembly 100 is reflected by the tiny reflective mirror 2401 and does not enter the lens 300, that is, the tiny reflective mirror 2401 is in a negative deflection angle status.
- the state at +12° is the on state
- the state at -12° is the off state
- the actual working state of the tiny mirror 2401 is only the on state and the off state.
- the state at +17° is the on state
- the state at -17° is the off state.
- the image signal is converted into digital codes such as 0 and 1, and these digital codes can drive the tiny mirror 2401 to vibrate.
- part or all of the tiny mirrors 2401 will be switched once between the on state and the off state, so as to realize the display in one frame of image according to the duration time of the tiny mirrors 2401 respectively in the on state and the off state.
- the gray scale of each pixel of For example, when a pixel has 256 gray scales from 0 to 255, the tiny mirrors corresponding to gray scale 0 are in the off state during the entire display period of one frame of image, and the tiny mirrors corresponding to gray scale 255 are in the off state during one frame.
- the whole display period of the image is in the on state, and the tiny reflective mirror corresponding to the gray scale 127 is in the on state for half of the time in the display period of a frame of image, and the other half of the time is in the off state. Therefore, the state and the maintenance time of each state in the display period of each frame of image are controlled by the image signal to control the brightness (gray scale) of the corresponding pixel of the tiny mirror 2401 to realize the projection
- the illumination beam to the DMD240 is modulated for the purpose.
- the light guide 210 at the front end of the DMD240, the lens assembly 220 and the reflector 230 form an illumination optical path, and the illumination beam emitted by the light source assembly 100 passes through the illumination optical path to form a beam size and incident angle that meet the requirements of the DMD240.
- the lens 300 includes a combination of multiple lenses, which are generally divided into groups, such as three-stage front group, middle group and rear group, or two-stage front group and rear group.
- the front group is the lens group near the light output side of the projection device (left side shown in FIG. 2 )
- the rear group is the lens group near the light output side of the light engine 200 (right side shown in FIG. 2 ).
- the lens 300 may also be a zoom lens, or a fixed focus adjustable focus lens, or a fixed focus lens.
- the laser projection device is an ultra-short-focus projection device
- the lens 300 is an ultra-short-focus lens
- the throw ratio of the lens 300 is usually less than 0.3, such as 0.24.
- the size of the image projected by the laser projection device 10 is determined by the distance between the laser projection device 10 and the projection display screen, and the larger the distance is, the larger the projected image will be.
- the ultra-short-focus laser projection equipment has a small requirement for distance, and often only needs a projection distance of tens of centimeters to project a larger picture. Wide range of applications.
- the light source assembly 100 of an ultra-short-focus laser projection device generally emits a laser beam obliquely upward. to produce a complete projected image.
- the distance between the ultra-short-focus laser projection device and the projection screen is relatively small, therefore, a slight shift of the ultra-short-focus laser projection device may cause deformation or distortion of the picture, causing the projected picture to exceed the screen.
- the projected image projected by the ultra-short-focus laser projection device may exceed the projection screen, resulting in a poor display effect of the projected image.
- the laser projection device 10 further includes a circuit system architecture (Power System Architecture) 400, and the circuit system architecture 400 may be a printed circuit board assembly (Printed Circuit Board Assembly, PCBA).
- FIG. 1 only shows the approximate location of the circuit system architecture 400 , and the specific location of the circuit system architecture 400 may be arranged differently in different laser projection devices 10 .
- the circuit system architecture 400 is configured to control the light source assembly 100 to emit an illumination beam.
- the circuit system architecture 400 includes a SoC 810 , a data transmission circuit 820 and a display control chip 830 .
- the SoC 810 is coupled to the display control chip 830 through the data transmission circuit 820
- the display control chip 830 is coupled to the optical machine 200 .
- the system-on-a-chip 810 is configured to: determine the adjusted position of any feature point in the first projected image in response to the user's adjustment operation to adjust the position of the feature point, and determine the second projection image based on the initial position and the adjusted position of the feature point.
- Image correction data ; transmit the correction data to the display control chip 830 through the data transmission circuit 820 .
- the data transmission circuit 820 is configured to: receive the correction data, and transmit the correction data to the display control chip 830 .
- the display control chip 830 is configured to: receive the correction data, perform correction processing on the second projected image based on the correction data, and transmit the image signal of the corrected second projected image to the optical machine 220, so that the optical machine 200 can use the corrected
- the processed image signal of the second projection image modulates the illumination beam provided by the light source assembly 100 to obtain a projection beam.
- the SoC 810 may be called a first controller, and the display control chip 830 may be called a second controller.
- the first projected image is an image used to determine correction data, and may also be referred to as a correction image.
- the first projected image includes a plurality of feature points, for example, the first feature point is any one of the plurality of feature points.
- the embodiment of the present disclosure does not limit the number of feature points included in the first projection image.
- the first projected image 00 is an image displayed on a projection screen, and the first projected image 00 may include 8 feature points from A to H, and the 8 feature points include any of the first projected image 00.
- a vertex such as A, B, C, or D
- a midpoint such as E, F, G, or H
- the first feature point may be any one of the eight feature points.
- the adjustment operation performed by the user to adjust the position of any feature point in the first projection image is used to adjust the position of the first feature point on the projection screen.
- the first projection image is displayed on the projection screen, and the user adjusts the position of the first feature point in the first projection image on the projection screen by triggering the adjustment operation.
- This adjustment operation can be triggered by a button on the laser projection device 10, or by the remote control of the laser projection device 10.
- the following embodiments take the position adjustment operation as an example triggered by the user on the remote control of the laser projection device 10 as an example. sexual description.
- the above adjustment position is a position not beyond the projection screen. That is, the position adjustment operation may move the first feature points in the first projection image displayed on the projection screen beyond the projection screen, and the moved first feature points in the first projection image no longer exceed the projection screen.
- the second projected image may be an image to be projected, and the second projected image may include a plurality of pixel regions arranged in an array, and the correction data of the second projected image may include The correction data corresponding to the pixel area.
- the correction data of the second projection image may include correction data corresponding to the 1984 pixel areas.
- one feature point in the first projection image may correspond to one pixel area in the second projection image, or may correspond to multiple pixel areas in the second projection image.
- the SoC 810 is configured to: determine an offset parameter of the first feature point based on the initial position and the adjusted position of the first feature point, where the offset parameter includes an offset amount and an offset direction. And based on the offset parameter of the first feature point, the correction data of one or more pixel areas corresponding to the first feature point in the second projection image are determined.
- the initial positions of the multiple feature points in the first projected image may be pre-stored in the SoC 810 .
- the offset parameters of the first feature point determined by SoC 810 may include the offset amount and offset direction of the first feature point.
- the first feature point is feature point A
- the first feature point The offset of a feature point A is X1
- the offset of the first pixel area is the same as the offset of the corresponding first feature point, and the offset direction of the first pixel area is the same as that of the corresponding first feature point.
- the offset direction of other pixel regions except the first pixel region in the second projected image is the same as that of the first pixel region, and the second projected image except the first pixel region
- the offsets of the other pixel areas outside are smaller than the offset of the first pixel area.
- the second pixel area is a pixel area other than the first pixel area in the second projected image, and the offset of the second pixel area is negatively correlated with the distance between the second pixel area and the first pixel area .
- the correction data of the second projection image includes correction data of each pixel area in the second projection image
- the SoC 810 determines the correction data of the second projection image, that is, determines the correction data of each pixel in the second projection image The offset and offset direction of the region.
- the display control chip 830 receives the correction data of the second projected image, and determines the correction data of each pixel based on the correction data of each pixel region and the positions of a plurality of pixels in the pixel region, and each pixel The correction data includes the offset amount and offset direction of the pixel. Based on the correction data of each pixel, the display control chip 830 can determine the correction position of the pixel in the image coordinate system. Based on the corrected position of each pixel in the image coordinate system in the second projected image, the display control chip 830 may perform correction processing on the second projected image, so as to obtain a corrected second projected image.
- the correction data of the second projection image includes correction data of each pixel in the second projection image
- the SoC 810 determines the correction data of the second projection image, that is, determines the correction data of each pixel in the second projection image Offset and offset direction.
- the SoC 810 can determine the offset and offset direction of each pixel in the first pixel area based on the correction data of the first pixel area, and transmit the offset of each pixel in the first pixel area to the display control chip. Shift and offset direction.
- the display control chip 830 may perform correction processing on the second projected image, so as to obtain a corrected second projected image.
- the SoC 810 can determine the offset and offset direction of all pixel regions in the second projection image according to the offset parameter of at least one first feature point, or can also determine the offset
- the shift parameters determine the shift amount and shift direction of all pixels in the second projected image.
- the SoC 810 is further configured to: when the second position is within the adjustable position range corresponding to the first feature point, generate prompt information based on the second position and the adjustable position range, and send the prompt information to the display control chip 830 .
- the prompt information is used to show the user the adjustable offset of the first feature point in the first direction.
- the display control chip 830 is also configured to project prompt information to a projection screen.
- the projection screen may be a projection screen, a wall, or other devices capable of displaying projected images.
- the first direction may be parallel to the pixel row direction, or may be parallel to the pixel column direction.
- the adjustable position range of each feature point in each direction may be pre-stored in the SoC 810 . After determining the adjusted position of the first feature point, the SoC 810 may determine an adjustable position range of the first feature point in the first direction. If the second position of the first feature point is within the adjustable position range corresponding to the first feature point, prompt information corresponding to the first feature point may be generated based on the second position and the adjustable position range.
- the first feature point H when the user moves the first feature point H from the first position to the second position along the first direction g, and the first direction g is parallel to the pixel row direction, the first feature point H
- the abscissa of the current position is 1900
- the abscissa of the upper limit of the position is 1890 as an example.
- the SoC 810 may determine that the number of pixels between the abscissa of the current position of the first feature point H and the abscissa of the upper limit of the position is 10. Therefore, the prompt information 01 generated by the SoC 810 based on the number of pixels may be "the feature point H can move 10 pixels along the first direction g".
- the prompt information is further used to: prompt the user of the adjustable offset of the first feature point in the second direction, and the second direction is different from the first direction.
- the second direction may include a direction opposite to the first direction g and a direction perpendicular to the first direction g (that is, parallel to direction of the pixel column direction). If the first feature point is a midpoint on any side, such as feature point H, the second direction may include a direction opposite to the first direction g.
- the prompt information is further used to: prompt the user of adjustable offsets and adjustable directions of other feature points in the first projected image except the first feature point.
- the first feature point is the vertex of the first projected image
- the first feature point is feature point A
- the adjustable offset of the first feature point A in the pixel row direction is 220 pixels
- the adjustable offset in the pixel column direction is 180 pixels
- the long side of the first projected image includes 220 pixels
- the short side includes 180 pixels
- the extending direction of the long side is parallel to the pixel row direction
- the extending direction of the short side is parallel to the pixel column direction.
- the prompt information may be: "The adjustable offset of the feature point E in the direction of the pixel column is 180 pixels.
- the prompt information may be: "The adjustable offset of the feature point G in the pixel row direction is 220 pixels.”
- the data transmission circuit 820 may be any transmission circuit with a data transmission function, such as any transmission bus circuit.
- a data transmission function such as any transmission bus circuit.
- it may be an ISA ((Industry Standard Architecture, Industry standard architecture) bus transmission circuit, EISA (Extended Industry Standard Architecture, extended industry standard structure) bus transmission circuit, VESA (Video Electronics Standards Association, Video Electronics Standards Association) bus transmission circuit, PCI (Peripheral Component Interconnect, peripheral components Interconnect standard) bus transmission circuit or USB (Universal Serial Bus, Universal Serial Bus) transmission circuit.
- ISA Industry Standard Architecture
- EISA Extended Industry Standard Architecture, extended industry standard structure
- VESA Video Electronics Standards Association
- PCI Peripheral Component Interconnect, peripheral components Interconnect standard
- USB Universal Serial Bus, Universal Serial Bus
- the USB transmission circuit can be connected with the system-level chip 810 and the display control chip 830 respectively through the USB protocol Coupling, to carry out the transmission of correction data.
- this system-on-a-chip 810 can transmit the larger correction data of data volume to data transmission circuit 820 through this USB protocol, and data transmission circuit 820 can use the larger correction data of data volume
- the transmission to the display control chip 830 effectively improves the efficiency of data transmission and the amount of data that can be transmitted.
- the data transmission circuit 820 may include an interface subcircuit 201 , a switch subcircuit 202 and a switch control subcircuit 203 .
- the interface sub-circuit 201 is coupled to the SoC 810 and configured to: receive calibration data from the SoC 810 .
- the switch subcircuit 202 has a first input terminal 2022 and an output terminal 2023 .
- the first input end 2022 is coupled to the SoC 810 through the interface sub-circuit 201 , and the output end 2023 is coupled to the display control chip 830 .
- the switch sub-circuit 202 is configured to receive correction data through the first input terminal 2022 ; in response to the first switch control signal, control the first input terminal 2022 and the output terminal 2023 to conduct, and transmit the correction data to the display control chip 830 .
- the switch control sub-circuit 203 is coupled to the switch sub-circuit 202 and configured to send a first switch control signal to the switch sub-circuit 202 in response to the calibration data received at the first input terminal 2022 .
- the interface sub-circuit 201 may be a USB hub (hub), and the interface sub-circuit 201 is respectively coupled to the SoC 810 and the first input terminal 2022 through the USB protocol.
- the output terminal 2023 can be coupled to the display control chip through the USB protocol, the switch control sub-circuit 203 is coupled to the control terminal of the switch sub-circuit 202 , and the communication between the input channel and the output channel of the switch sub-circuit 202 is controlled.
- the data transmission circuit 820 may further include a connector 204 , and the connector 204 is respectively coupled to the output terminal 2023 and the display control chip 830 .
- the connector 204 is configured to transmit the calibration data from the output terminal 2023 to the display control chip 830 .
- the transmission path of the correction data of the second projected image is as follows: the SoC 10 determines the correction data of the second projected image and transmits the correction data to the interface sub-circuit 201, and the interface sub-circuit 201 receives the correction data and sends the correction data to the second projected image.
- An input 2022 transmits calibration data.
- the first input terminal 2022 receives the correction data
- the switch control subcircuit 203 responds to the first input terminal 2022 receiving the correction data, controls the first input terminal 2022 and the output terminal 2023 to conduct
- the switch subcircuit 202 transmits the correction data to the connector 204
- the connector 204 receives the calibration data and transmits the calibration data to the display control chip 830
- the display control chip 830 receives the calibration data.
- the switch subcircuit 202 further has a second input terminal 2021, and the switch subcircuit 202 is further configured to receive the first update transmitted from the first external device through the second input terminal 2021. data.
- the switch control subcircuit 203 is further configured to send a second switch control signal to the switch subcircuit 202 in response to the second input terminal 2021 receiving the first update data.
- the switch sub-circuit is further configured to control the conduction of the second input terminal 2021 and the output terminal 2023 in response to the second switch control signal, and transmit the first update data to the display control chip 830 .
- the display control chip 830 is further configured to update data based on the first update data, so that the data update method of the display control chip 830 is more convenient.
- the switch subcircuit 202 is also configured to transmit the first update data to the connector 204 .
- the connector 204 is also configured to transmit the first update data to the display control chip 830 .
- the first update data may be a correction algorithm for performing correction processing on the second projected image based on the correction data
- the display control chip 830 may perform correction on the correction algorithm stored in the display control chip 830 based on the first update data. renew.
- the first update data can be directly transmitted to the display control chip 830, so that the display control chip 830 performs data update based on the first update data.
- the interface subcircuit 201 has a third input terminal 2011 .
- the interface sub-circuit 201 is further configured to: receive the second update data transmitted from the second external device through the third input terminal, and transmit the second update data to the SoC 810 .
- the SoC 810 is further configured to: perform data update based on the second update data.
- the second update data may be an algorithm for determining the correction data of the second projection image
- the SoC 810 may update the algorithm for determining the correction data of the second projection image based on the second update data. This makes the data update method of the SoC 810 more convenient.
- the laser projection device may further include a main control circuit 205 , and the main control circuit 205 is respectively coupled to the SoC 810 and the display control chip. During normal projection and display of the second projected image, the main control circuit 205 is configured to transmit the second projected image transmitted from the SoC 810 to the display control chip 830 .
- the SoC 810 is further configured to receive network data, voice data, image data, and the like.
- the SoC 810 can determine the correction data of the second projection image
- the data transmission circuit 820 can transmit the correction data with a large amount of data to the display control chip 830
- the display control chip 830 can determine the correction data based on the second projection image.
- the correction data performs correction processing on the second projected image, and projects the corrected second projected image for projection. It can be seen that the SoC 810 and the display control chip 830 divide the correction processing of the second projected image into two parts.
- the system-on-a-chip 810 has a stronger data processing capability, and can acquire the correction data of the second projection image with a large amount of data, and the display control chip 830 only needs to perform correction processing on the second projection image based on the correction data of the second projection image,
- the working efficiency of the laser projection device provided in the embodiments of the present disclosure is improved.
- the display control chip 830 projects the processed second projection image, which can ensure the display effect when the second projection image is projected onto the projection screen.
- the first update data can be transmitted to the display control chip 830 through the second input terminal 2021 of the data transmission circuit 820
- the second update data can be transmitted to the SoC 810 through the third input terminal 2011 of the data transmission circuit 820 .
- the data transmission circuit 820 is coupled to the SoC and the display control chip respectively. Therefore, the data transmission circuit 820 can transmit the correction data and the first update data with a large amount of data to the display control chip 830, and transmit the second update data with a large amount of data to the system-on-chip 810, which improves the relationship between data transmission and data update. efficiency.
- some embodiments of the present disclosure provide a method for correcting a projected image, as shown in FIG. 14 , the correction method includes:
- Step 1401 the first controller determines the adjusted position of the feature point in response to the user's adjustment operation to adjust the position of any feature point in the first projected image.
- the first controller is a SoC 810
- the second controller is a display control chip 830
- the first projection image includes a plurality of feature points
- the first feature point is any one of the plurality of feature points as an example.
- the adjustment operation includes a plurality of sub-position adjustment operations, and each sub-position adjustment operation is used to instruct to move the first feature point from the first position to the second position along the first direction. That is, the first feature point can be moved from the initial position to the adjusted position by performing a plurality of sub-position adjustment operations.
- the first position may be an initial position, or an intermediate position corresponding to any sub-position adjustment operation in the process of moving from the initial position to the adjusted position.
- the second position may be the adjusted position, or may be an intermediate position corresponding to any sub-position adjustment operation in the process of moving from the initial position to the adjusted position.
- the adjustment operation may be an operation triggered by the user on the remote control of the laser projection device, and the remote control may be provided with a selection button, a plurality of moving buttons, and a confirmation button.
- a certain feature point is selected as the first feature point among the plurality of feature points in the first projected image.
- feature point A can be selected as the first feature point by using the selection button.
- the first feature point moves along the direction corresponding to the first movement button, and each time the user presses the first movement button, the first feature point moves along the direction corresponding to the first movement button.
- the direction is moved by a distance of one pixel
- the first movement button can be any one of the plurality of movement buttons. For example, if the direction corresponding to the first movement button is the first direction, you can press the first movement button multiple times, for example, press the first movement button 5 times, it means that the target feature will be moved 5 pixels along the first direction the distance.
- the trigger operation applied by the user on the confirmation button it is determined that the user selects the first feature point or determines that the user performs an operation corresponding to the first move button on the first feature point.
- the user when the user selects feature point A as the first feature point, the user can press the confirmation button, and the first controller can determine feature point A as the first feature point.
- the user may press the OK button after pressing the first moving button 5 times (the adjustment operation includes 5 sub-position adjustment operations), and the first controller can determine that the first feature point will be moved 5 times along the first direction. pixel distance. Therefore, the user can adjust the position of the first feature point by controlling the remote controller of the laser projection device.
- Step 1402 the first controller determines correction data of the second projected image based on the adjusted positions of the feature points.
- Step 1403 the first controller sends the correction data to the second controller.
- Step 1404 the second controller receives the correction data, performs correction processing on the second projection image based on the correction data, and transmits an image signal of the second projection image after correction processing to the optical machine.
- Step 1405 the optical machine uses the corrected image signal of the second projection image to modulate the illumination beam to obtain the projection beam.
- Step 1406 the lens projects the projection beam into an image.
- the correction method includes:
- Step 1501 the first controller determines an offset parameter of the feature point based on the initial position and the adjusted position of the feature point, and the offset parameter includes an offset amount and an offset direction.
- Step 1502 the first controller determines correction data of one or more pixel regions corresponding to the feature points in the second projection image based on the offset parameters of the feature points.
- the offset may be a projection offset measured in units of length, or a pixel offset measured in pixels, and the difference between the projection offset and the pixel offset There is a corresponding relationship among them, and the corresponding relationship may be pre-stored in the first controller. Taking a feature point in the first projection image corresponding to a pixel area in the second projection image, for example, the first feature point corresponds to the first pixel area, and the offset of the first feature point is the projection offset as an example, Then the projection offset of the first pixel area is the same as the projection offset of the first feature point.
- the pre-stored projection offset of the pixel area and The corresponding relation of pixel offset determines the pixel offset of each pixel area, and can be determined as the corrected position of the pixel area in the image coordinate system based on the pixel offset and offset direction of the pixel area.
- the resolutions of the first projected image and the second projected image can be M ⁇ N, M is the number of pixels in each column in the first projected image (that is, M is the number of pixel rows), and N is the number of pixels in the first projected image
- M is the number of pixels in each row of the image (that is, N is the number of pixel columns)
- M and N are both positive integers greater than 1, for example, M is 2160, N is 3840, then in the pixel row direction, the pixel offset that can be moved is 3840, and the pixel offset that can be moved is 2160 in the pixel column direction.
- the image coordinate system may be the screen coordinate system on the projection screen.
- the screen coordinate system can be a two-dimensional coordinate system XY, the horizontal axis X of the screen coordinate system XY is parallel to the pixel row direction, the vertical axis Y of the screen coordinate system is parallel to the pixel column direction, and the screen coordinate system XY
- the origin may be the feature point A of the displayed first projection image 00 .
- the offset of the first feature point, the offset of the first pixel area and the second pixel area may include the first offset in the direction of the pixel column and the offset in Second offset in pixel row direction.
- the offset direction of the first feature point, the offset direction of the first pixel area, and the offset direction of the second pixel area may include a first offset direction s1 and a second offset direction s2 parallel to the pixel row direction, and a parallel The third offset direction s3 and the fourth offset direction s4 in the pixel column direction.
- Both the first offset direction s1 and the third offset direction s3 are directions away from the origin of the screen coordinate system XY, and the second offset direction s2 and the fourth offset direction s4 are both directions close to the origin of the screen coordinate system XY.
- the first offset direction s1 is opposite to the second offset direction s2, and the third offset direction s3 is opposite to the fourth offset direction s4.
- the initial position and the adjusted position of the first feature point may be represented by coordinates in the screen coordinate system, that is, the initial position and the adjusted position may include an abscissa and a ordinate.
- the first controller may determine the first difference and the second difference respectively.
- the first difference is the difference between the abscissa of the adjusted position and the abscissa of the initial position
- the second difference is the difference between the ordinate of the adjusted position and the ordinate of the initial position.
- the first controller may determine that the first offset of the first feature point is the absolute value of the first difference, and may determine that the second offset of the first feature point is The absolute value of the second difference.
- the first controller may respectively determine whether the first difference is greater than 0 and whether the second difference is greater than 0. If both the first difference and the second difference are equal to 0, the first controller may determine that the first feature point does not shift. If the first difference is greater than 0, the first controller may determine that the first feature point has moved by the first difference in a direction away from the XY origin of the screen coordinate system in the direction of the pixel row. Therefore, the first controller can determine that the offset direction of the first feature point is the first offset direction s1. If the first difference is less than 0, the first controller may determine that the first feature point has moved by the first difference in a direction close to the XY origin of the screen coordinate system in the direction of the pixel row. Therefore, the first controller can determine that the offset direction of the first feature point is the second offset direction s2.
- the first controller may determine that the first feature point has moved by the second difference in a direction away from the XY origin of the screen coordinate system in the direction of the pixel column. Therefore, the first controller can determine that the offset direction of the first feature point is the third offset direction s3. If the second difference is less than 0, the first controller may determine that the first feature point has moved by the second difference in a direction close to the XY origin of the screen coordinate system in the direction of the pixel row. Therefore, the first controller can determine that the offset direction of the first feature point is the fourth offset direction s4.
- the first controller may determine the first offset of the first pixel area and the second pixel area in the second projected image based on the first offset of the first feature point. And according to the first offset of each pixel area.
- the first controller can then determine the pixel sequence of the pixel region in the image coordinate system based on the first offset, the offset direction, and the initial position of the pixel region in the second projected image. direction, and based on the first offset and offset direction of each pixel area, determine the first offset of each pixel in each pixel area, and then based on the initial position of each pixel, obtain each Corrected position of a pixel in the pixel column direction in the image coordinate system.
- the first controller may determine a second offset between the first pixel area and the second pixel area based on the second offset of the first feature point. And according to the second offset of each pixel area, the second offset of the pixel area is determined. Then the first controller can determine the pixel row of the pixel region in the image coordinate system based on the second offset amount, the offset direction and the initial position of the pixel region in the second projected image in the second projected image. The adjustment position of the direction, and based on the first offset and offset direction of each pixel area, determine the first offset of each pixel in each pixel area, and then based on the initial position of each pixel, obtain each Corrected position of the pixel in the pixel column direction in the image coordinate system.
- the first controller can obtain each pixel in the image coordinate system based on the corrected position of each pixel in the direction of the pixel column in the image coordinate system and the corrected position of each pixel in the direction of the pixel column in the image coordinate system.
- the corrected position in the second projection image can be adjusted to the corrected position.
- the first controller may determine that the first offset of the first pixel area and the second pixel area are both 0, that is, the second projected image The first offset of each pixel area in is 0. If the second offset of the first feature point is equal to 0, the first controller can determine that the second offset of the first pixel area and the second pixel area are both 0, that is, each pixel in the second projection image The second offsets of the regions are all 0.
- the first controller can determine the first offset of the first pixel area corresponding to the first feature point A in the second projected image as X1 according to the first offset X1 of the first feature point A, and can determine the first offset of the first feature point A.
- the first offset of a pixel area Since the second offset of the first feature point A is 0, the first controller may determine that the second offset of each pixel area in the second projected image is 0. Moreover, the first controller may determine the first offset of each pixel in the pixel area based on the first offset of each pixel area, and then may determine the first offset of each pixel according to the first offset, the first offset Based on the moving direction and the initial position of each pixel in the image coordinate system, the corrected position of each pixel is determined, and then the pixel is adjusted to the corrected position.
- the adjustment operation includes a plurality of sub-position adjustment operations for moving the first feature point from the first position to the second position along the first direction.
- the correction method of the projected image also includes:
- Step 1601 when the second position is within the adjustable position range corresponding to the first feature point, the first controller generates prompt information based on the second position and the adjustable position range.
- the prompt information is configured to prompt the user of the adjustable offset of the first feature point in the first direction.
- the adjustable position range of the first feature point in the first direction may include a position upper limit and a position lower limit, both of which may be represented by coordinates in the screen coordinate system.
- both the position upper limit and the position lower limit may include an abscissa and a ordinate.
- the first controller can determine the abscissa of the second position and the abscissa of the upper limit of the position (or the abscissa of the lower limit of the position), the number p of pixels between them, and prompt information can be generated based on the number p of pixels.
- the prompt information may be "p pixels can be moved along the first direction".
- the first controller can determine the ordinate of the second position and the ordinate of the upper limit of the position (or the upper limit of the position).
- the number of pixels between the vertical coordinates of ), and prompt information can be generated based on the number of pixels.
- Step 1602 the first controller transmits prompt information to the second controller.
- Step 1603 the second controller receives the prompt information, and projects the prompt information to the projection screen.
- the prompt information is further used to: prompt the user of the adjustable offset of the first feature point in the second direction, and the second direction is different from the first direction.
- the first controller can detect the second position of the first feature point The number of pixels between the abscissa of and the abscissa of the position upper limit. If the number of pixels is greater than 0, the first controller can determine that the second direction of the first feature point includes a direction opposite to the first direction, and correspondingly, the prompt message can be "the first feature point can also be Move in the opposite direction to the first direction". If the number of pixels is equal to 0, the first controller may determine that the second direction of the first feature point does not include a direction opposite to the first direction.
- the first controller may also detect the number of pixels between the ordinate of the second position and the ordinate of the upper limit of the position. If the number of pixels is greater than 0, the first controller can determine that the second direction of the first feature point includes a direction parallel to the direction of the pixel column and close to the upper limit of the position.
- the prompt message can be "the first feature point The point can also move in the direction of the pixel column and close to the upper limit of the position". If the number of pixels is equal to 0, the first controller may determine that the second direction of the first feature point does not include a direction parallel to the pixel row direction and close to the upper limit of the position.
- the first controller may also detect the number of pixels between the ordinate of the second position and the ordinate of the lower limit of the position. If the number of pixels is greater than 0, the first controller can determine that the second direction of the first feature point includes a direction parallel to the direction of the pixel column and close to the lower limit of the position.
- the prompt message can be "the first feature point The point can also move in the direction of the pixel column and close to the lower limit of the position". If the number of pixels is equal to 0, the first controller may determine that the second direction of the first feature point does not include a direction parallel to the pixel row direction and close to the lower limit of the position.
- the second controller may also display a direction sign indicating the direction in which the first feature point can move, so that the user can intuitively see the direction in which the first feature point can move.
- the first feature point can have a movable direction mark r1 and a direction mark r2, the direction indicated by the direction mark r1 is the same as the first direction g1, and the direction indicated by the direction mark r2 is the same as the second direction same for g2.
- the laser projection device After the laser projection device determines the second direction, it can determine the adjustable offset of the first feature point in the second direction based on the second position and the adjustable position range of the second direction, and can determine the adjustable offset of the first feature point in the second direction based on the first feature point.
- An adjustable offset in the second direction generates this hint.
- the prompt information may be: "the first feature point may also move 10 pixels in the direction of the pixel column and in the direction close to the lower limit of the position".
- the prompt information is further used to: prompt the user of the adjustable offset and adjustable direction of the feature points in the first projection image other than the first feature point.
- steps 1501 to 1502 can be performed before steps 1601 to 1603, or can be executed before steps 1601 to 1603. Execute after step 1603.
- the second projection image can be corrected before the second projection image is projected onto the projection screen, so that the projection screen displays the corrected second projection image, avoiding It goes beyond the range of the projection screen.
- the second projection image projected by the laser projection device exceeds the range of the projection screen.
- the external reason may be that the user accidentally moves the laser projection device.
- the second projection image can be corrected by using the projection image correction method provided by the embodiment of the present disclosure, so that the corrected second projection image displayed on the projection screen is within the range of the projection screen as shown in FIG. 18 .
- some embodiments of the present disclosure provide a computer-readable storage medium (for example, a non-transitory computer-readable storage medium), where computer program instructions are stored in the computer-readable storage medium. (for example, a laser projection device), the computer is made to execute the method for correcting a projected image as described in any of the above embodiments.
- a computer-readable storage medium for example, a non-transitory computer-readable storage medium
- computer program instructions are stored in the computer-readable storage medium.
- the computer is made to execute the method for correcting a projected image as described in any of the above embodiments.
- the above-mentioned computer-readable storage medium may include, but is not limited to: a magnetic storage device (for example, a hard disk, a floppy disk, or a magnetic tape, etc.), an optical disk (for example, a CD (Compact Disk, a compact disk), a DVD (Digital Versatile Disk, digital universal disk), etc.), smart cards and flash memory devices (for example, EPROM (Erasable Programmable Read-Only Memory, Erasable Programmable Read-Only Memory), card, stick or key driver board, etc.).
- Various computer-readable storage media described in this disclosure can represent one or more devices and/or other machine-readable storage media for storing information.
- the term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.
- some embodiments of the present disclosure also provide a computer program product.
- the computer program product includes computer program instructions.
- the computer program instructions When the computer program instructions are executed on a computer (for example, a laser projection device), the computer program instructions cause the computer to execute the method for correcting projected images as described in the above-mentioned embodiments.
- some embodiments of the present disclosure also provide a computer program.
- the computer program When the computer program is executed on a computer (for example, a laser projection device), the computer program causes the computer to execute the method for correcting projected images as described in the above-mentioned embodiments.
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Abstract
提供了一种激光投影设备,该激光投影设备包括光源组件(100)、光机(200)、镜头(300)和电路系统架构(400)。其中,光源组件(100)被配置为提供照明光束。光机(200)被配置为利用图像信号对照明光束进行调制,以获得投影光束。镜头(300)被配置为将投影光束投射成像;以及电路系统架构(400)被配置为控制光源组件发出照明光束。电路系统架构包括第一控制器和第二控制器。
Description
本申请要求于2021年06月03日提交的、申请号为202110620114.6的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本公开涉及投影显示领域,特别涉及一种激光投影设备及投影图像的校正方法。
激光投影系统包括投影屏幕和激光投影设备,激光投影设备能够在投影屏幕上投射画面,以实现视频播放等功能。
目前的激光投影设备包括有:光源组件、光机和镜头,该光源组件用于向光机提供高强度的激光照明光束;该光机用于对激光照明光束进行图像信号调制形成投影光束,经光机调制后形成的投影光束进入镜头;该镜头用于将投影光束投射至投影屏幕上。
发明内容
一方面,本公开一些实施例提供一种激光投影设备,该激光投影设备包括光源组件、光机、镜头和电路系统架构。其中,光源组件被配置为提供照明光束。光机,被配置为利用图像信号对照明光束进行调制,以获得投影光束。镜头,被配置为将投影光束投射成像;以及电路系统架构,被配置为控制光源组件发出照明光束。电路系统架构包括第一控制器和第二控制器。其中,第一控制器,被配置为响应于用户调整第一投影图像中任意一个特征点的位置的调整操作,确定特征点的调整位置;基于特征点的初始位置和调整位置,确定第二投影图像的校正数据;向第二控制器传输校正数据。第二控制器,耦接至光机与第一控制器,且被配置为接收校正数据,基于校正数据对第二投影图像进行校正处理,并向光机传输校正处理后的第二投影图像的图像信号,以使光机利用校正处理后的第二投影图像的图像信号对照明光束进行调制,以获得投影光束。
另一方面,本公开一些实施例提供了一种投影图像的校正方法,该校正方法包括:首先,第一控制器响应于用户调整第一投影图像中任意一个特征点的位置的调整操作,确定特征点的调整位置。其后,第一控制器基于特征点的调整位置确定第二投影图像的校正数据。再次,第一控制器向第二控制器发送校正数据。从次,第二控制器接收校正数据,基于校正数据对第二投影图像进行校正处理,并向光机传输校正处理后的第二投影图像的图像信号。然后,光机利用校正处理后的第二投影图像的图像信号对照明光束进行调制,获得投影光束。最后,镜头将所述投影光束投射成像。
又一方面,本公开一些实施了提供了一种激光投影设备,该激光投影设备包括光源组件、光机、镜头和电路系统架构。其中,光源组件被配置为提供照明光束。光机,被配置为利用图像信号对照明光束进行调制,以获得投影光束。镜头,被配置为将投影光束投射成像;以及电路系统架构,被配置为控制光源组件发出照明光束。电路系统架构包括系统级芯片和显示控制芯片。其中,系统级芯片,被配置为响应于用户调整第一投影图像中任意一个特征点的位置的调整操作,确定特征点的调整位置;基于特征点的初始位置和调整位置,确定第二投影图像的校正数据;向显示控制芯片传输校正数据。显示控制芯片,耦接至光机与系统级芯片,且被配置为接收校正数据,基于校正数据对第二投影图像进行校正处理,并向光机传输校正处理后的第二投影图像的图像信号,以使光机利用校正处理后的第二投影图像的图像信号对照明光束进行调制,以获得投影光束。
为了更清楚地说明本公开实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本公开的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为根据本公开一些实施例的一种激光投影设备的结构图;
图2为根据本公开一些实施例的激光投影设备中光源组件、光机和镜头的示意图;
图3为根据本公开一些实施例的激光投影设备中的光路架构图;
图4为根据本公开一些实施例的激光投影设备中光源组件的光路原理示意图;
图5为根据本公开一些实施例的数字微镜器件中的微小反射镜片的排列结构图;
图6为根据本公开一些实施例的微小反射镜片的工作示意图;
图7为图5所示数字微镜器件中一个微小反射镜片摆动的位置示意图;
图8为本公开实施例提供的一种激光投影设备的结构示意图;
图9为本公开实施例提供的一种第一投影图像的示意图;
图10为本公开实施例提供的一种第一特征点移动偏移量的示意图;
图11为本公开实施例提供的一种提示信息的示意图;
图12为本公开实施例提供的另一种提示信息的示意图;
图13为本公开实施例提供的另一种激光投影设备的结构示意图;
图14为本公开实施例提供的一种投影图像的校正方法的流程图;
图15为本公开实施例提供的另一种投影图像的校正方法的流程图;
图16为本公开实施例提供的又一种投影图像的校正方法的流程图;
图17为本公开实施例提供的一种第二投影图像超出投影屏幕范围的示意图;
图18为本公开实施例提供的一种第二投影图像未超出投影屏幕范围的示意图。
下面将结合附图,对本公开一些实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本公开一部分实施例,而不是全部的实施例。基于本公开所提供的实施例,本领域普通技术人员所获得的所有其他实施例,都属于本公开保护的范围。
本公开一些实施例提供一种激光投影设备,如图1所示,激光投影设备10包括整机壳体101(图中仅示出部分壳体),装配于整机壳体101中的光源组件100、光机200,以及镜头300。该光源组件100被配置为提供照明光束(激光束)。该光机200被配置为利用图像信号对光源组件100提供的照明光束进行调制以获得投影光束。该镜头300被配置为将投影光束投射在屏幕或墙壁上成像。光源组件100、光机200和镜头300沿着光束传播方向依次连接,各自由对应的壳体进行包裹。光源组件100、光机200和镜头300各自的壳体对各光学部件进行支撑并使得各光学部件达到一定的密封或气密要求。比如,光源组件100通过其对应的外壳实现气密性密封,可以较好地改善光源组件100的光衰问题。
光机200的一端和镜头300连接且沿着整机第一方向X设置,比如第一方向X可以为整机的宽度方向。在光机200的另一端连接有光源组件100。在本示例中,光源组件100与光机200的连接方向,垂直于光机200与镜头300的连接方向,这种连接结构一方面可以适应光机200中反射式光阀的光路特点,另一方面,还有利于缩短一个维度方向上光路的长度,利于整机的结构排布。例如,当将光源组件100、光机200和镜头300设置在一 个维度方向(例如,与第一方向X垂直的方向)上时,该方向上光路的长度就会很长,从而不利于整机的结构排布。
在一些实施例中,如图2所示,光源组件100可以包括三个激光器阵列。该三个激光器阵列可分别为红色激光器阵列130、绿色激光器阵列120和蓝色激光器阵列110,即光源组件100为三色激光光源;但并不局限于此,该三个激光器阵列也可以均为蓝色激光器阵列110,或者两个激光器阵列为蓝色激光器阵列110、一个激光器阵列为红色激光器阵列130。
在一些实施例中,光源组件100还可以包括两个激光器阵列。该两个激光器阵列可以为蓝色激光器阵列110和红色激光器阵列130,即光源组件100为双色激光光源;也可以均为蓝色激光器阵列110,即光源组件100为单色激光光源。在另一些实施例中,光源组件100还可以包括一个激光器阵列,即光源组件100为单色激光光源,在该单色激光光源中,参见图4,该一个激光器阵列可以为蓝色激光器阵列110。
当光源组件100仅包括蓝色激光器阵列110,或者仅包括蓝色激光器阵列110和红色激光器阵列130时,如图4所示,该光源组件100还可以包括:荧光轮140和滤色轮150。该蓝色激光器110发射蓝光后,一部分蓝光照射到荧光轮140上以产生红光荧光(当光源组件100包括红色激光器阵列130时,则不需要再产生红色荧光)和绿光荧光;该蓝光激光、红光荧光(或红色激光)以及绿光荧光依次通过合光镜160后再通过滤色轮150进行滤色,并时序性地输出三基色光。根据人眼的视觉暂留现象,人眼分辨不出某一时刻光的颜色,感知到的仍然是混合的白光。
光源组件100发出的照明光束进入光机200。如图2和图3所示,光机200可以包括:光导管210,透镜组件220,反射镜230,数字微镜器件(Digital Micromirror Device,DMD)240以及棱镜组件250。该光导管210可以接收光源组件100提供的照明光束,并对该照明光束进行匀化。透镜组件220可以对照明光束先进行放大后进行会聚并出射至反射镜230。反射镜230可以将照明光束反射至棱镜组件250。棱镜组件250将照明光束反射至DMD240,DMD240对照明光束进行调制,并将调制后得到的投影光束反射至镜头300中。
光机200中,DMD240是核心部件,其作用是利用图像信号对光源组件100提供的照明光束进行调制,即:控制照明光束针对待显示图像的不同像素显示不同的颜色和亮度,以最终形成光学图像,因此DMD240也被称为光调制器件或光阀。根据光调制器件(或光阀)对照明光束进行透射还是进行反射,可以将光调制器件(或光阀)分为透射式光调制器件(或光阀)或反射式光调制器件(或光阀)。例如,图2和图3所示的DMD240对照明光束进行反射,即为一种反射式光调制器件。而液晶光阀对照明光束进行透射,因此是一种透射式光调制器件。此外,根据光机中使用的光调制器件(或光阀)的数量,可以将光机分为单片系统、双片系统或三片系统。例如,图2和图3所示的光机200中仅使用了一片DMD240,因此光机200可被称为单片系统。当使用三片数字微镜器件时,则光机200可以被称为三片系统。
DMD240应用于数字光处理(Digital Light Processing,DLP)投影架构中,图2和图3所示的光机200使用了DLP投影架构。如图5所示,DMD240包含成千上万个可被单独驱动以旋转的微小反射镜片2401,这些微小反射镜片2401呈阵列排布,每个微小反射镜片2401对应待显示图像中的一个像素。在DLP投影架构中,每个微小反射镜片2401相当于一个数字开关,在外加电场作用下可以在正负12度(±12°)或者正负17度(±17°)的 范围内摆动,如图7所示。
如图6所示,微小反射镜片2401在负的偏转角度反射出的光,称之为OFF光,OFF光为无效光,通常打到整机壳体101上、光机200的壳体上或者光吸收单元上吸收掉。微小反射镜片2401在正的偏转角度反射出的光,称之为ON光,ON光是DMD240表面的微小反射镜片2401接收照明光束照射,并通过正的偏转角度射入镜头300的有效光束,用于投影成像。微小反射镜片2401的开状态为光源组件100发出的照明光束经微小反射镜片2401反射后可以进入镜头300时,微小反射镜片2401所处且可以保持的状态,即微小反射镜片2401处于正的偏转角度的状态。微小反射镜片2401的关状态为光源组件100发出的照明光束经微小反射镜片2401反射后未进入镜头300时,微小反射镜片2401所处且可以保持的状态,即微小反射镜片2401处于负的偏转角度的状态。
例如,如图7所示,对于偏转角度为±12°的微小反射镜片2401,位于+12°的状态即为开状态,位于-12°的状态即为关状态,而对于-12°和+12°之间的偏转角度,微小反射镜片2401的实际工作状态仅开状态和关状态。
对于偏转角度为±17°的微小反射镜片2401,位于+17°的状态即为开状态,位于-17°的状态即为关状态。图像信号通过处理后被转换成0、1这样的数字代码,这些数字代码可以驱动微小反射镜片2401摆动。
在一帧图像的显示周期内,部分或全部微小反射镜片2401会在开状态和关状态之间切换一次,从而根据微小反射镜片2401在开状态和关状态分别持续的时间来实现一帧图像中的各个像素的灰阶。例如,当像素具有0~255这256个灰阶时,与灰阶0对应的微小反射镜片在一帧图像的整个显示周期内均处于关状态,与灰阶255对应的微小反射镜片在一帧图像的整个显示周期内均处于开状态,而与灰阶127对应的微小反射镜片在一帧图像的显示周期内一半时间处于开状态、另一半时间处于关状态。因此通过图像信号控制DMD240中每个微小反射镜片在一帧图像的显示周期内所处的状态以及各状态的维持时间,可以控制该微小反射镜片2401对应像素的亮度(灰阶),实现对投射至DMD240的照明光束进行调制的目的。
DMD240前端的光导管210,透镜组件220和反射镜230形成照明光路,光源组件100发出的照明光束经过照明光路后形成符合DMD240所要求的光束尺寸和入射角度。
如图2所示,镜头300包括多片透镜组合,通常按照群组进行划分,分为前群、中群和后群三段式,或者前群和后群两段式。前群是靠近投影设备出光侧(图2所示的左侧)的镜片群组,后群是靠近光机200出光侧(图2所示的右侧)的镜片群组。根据上述多种镜片组组合,镜头300也可以是变焦镜头,或者为定焦可调焦镜头,或者为定焦镜头。在一些实施例中,激光投影设备为超短焦投影设备,镜头300为超短焦镜头,镜头300的投射比通常小于0.3,比如0.24。
通常,激光投影设备10投影的画面大小,是由激光投影设备10与投影显示屏幕的距离决定的,距离越大投影的画面越大。而超短焦激光投影设备对距离要求小,往往只需要几十厘米的投影距离就能投影出较大的画面,安装的时候也非常方便,因此具有节省空间、安装方便的优势,进而具有较广泛的应用。
基于投影成像的原理,超短焦激光投影设备的光源组件100一般是斜向上发射出激光光束,光源组件100出射的激光光束与投影屏幕之间的位置必须严格对位,才能够在投影屏幕显示出完整的投影图像。而超短焦激光投影设备与投影屏幕之间的距离较小,因此, 超短焦激光投影设备轻微的移位有可能会导致画面的形变或畸变,而导致投影出的画面超出屏幕。比如,若用户不小心移动了超短焦激光投影设备,由超短焦激光投影设备投射的投影图像可能会超出投影屏幕,导致该投影图像的显示效果较差。
为此,如图1和图8所示,激光投影设备10还包括电路系统架构(Power System Architecture)400,该电路系统架构400可以为印刷电路板组件(Printed Circuit Board Assembly,PCBA)。图1仅示意了电路系统架构400的大致位置,而电路系统架构400的具体位置在不同的激光投影设备10中可以有不同的安排。该电路系统架构400被配置为控制光源组件100发出照明光束。
如图8所示,该电路系统架构400包括系统级芯片810、数据传输电路820和显示控制芯片830。系统级芯片810通过数据传输电路820耦接至显示控制芯片830,显示控制芯片830与光机200耦接。
系统级芯片810被配置为:响应于用户调整第一投影图像中任意一个特征点的位置的调整操作,确定该特征点的调整位置,基于该特征点的初始位置和调整位置,确定第二投影图像的校正数据;通过数据传输电路820向显示控制芯片830传输该校正数据。
数据传输电路820被配置为:接收校正数据,并向显示控制芯片830传输校正数据。
显示控制芯片830被配置为:接收校正数据,基于校正数据对第二投影图像进行校正处理,并向光机220传输校正处理后的第二投影图像的图像信号,以使光机200可以利用校正处理后的第二投影图像的图像信号对光源组件100提供的照明光束进行调制,以获得投影光束。
在一些实施例中,在一些实施例中,系统级芯片810可以称为第一控制器,显示控制芯片830可以称为第二控制器。
在一些实施例中,第一投影图像为用于确定校正数据的图像,也可以称为校正图像。第一投影图像包括多个特征点,以第一特征点为多个特征点中的任意一个特征点为例。本公开实施例对于第一投影图像包括的特征点的数量不作限定。例如,如图9所示,第一投影图像00为投影屏幕上显示的图像,第一投影图像00可以包括A至H共8个特征点,该8个特征点包括第一投影图像00的任一顶点(比如A,B,C,或D),和第一投影图像00的任一条边上的中点(比如E,F,G,或H)。第一特征点可以为该8个特征点中的任意一个特征点。
在一些实施例中,用户调整第一投影图像中任意一个特征点的位置的调整操作,用于调整第一特征点在投影屏幕中的位置。例如,投影屏幕上显示第一投影图像,用户通过触发该调整操作以调整该第一投影图像中的第一特征点在投影屏幕中的位置。该调整操作可以通过激光投影设备10上的按钮触发,也可以通过激光投影设备10的遥控器触发,下述实施例以位置调整操作为用户在激光投影设备10的遥控器上触发为例进行示例性说明。示例性的,上述调整位置为不超出投影屏幕的位置。即,位置调整操作可以对投影屏幕上显示的第一投影图像中超出投影屏幕的第一特征点进行移动,移动后的第一投影图像中的第一特征点不再超出投影屏幕。
在一些实施例中,第二投影图像可以为待投影的图像,该第二投影图像可以包括阵列排布的多个像素区域,第二投影图像的校正数据可以包括与多个像素区域中每个像素区域对应的校正数据。比如,若第二投影图像可以包括32×62共1984个像素区域,则第二投影图像的校正数据可以包括1984个像素区域对应的校正数据。
在一些实施例中,第一投影图像中的一个特征点可以对应于第二投影图像中的一个像素区域,也可以对应于第二投影图像中的多个像素区域。
在一些实施例中,系统级芯片810被配置为:基于第一特征点的初始位置和调整位置确定第一特征点的偏移参数,偏移参数包括偏移量和偏移方向。并基于第一特征点的偏移参数,确定第二投影图像中与第一特征点对应的一个或多个像素区域的校正数据。其中,第一投影图像中多个特征点的初始位置可以预先存储于系统级芯片810中。
因此,系统级芯片810确定的第一特征点的偏移参数可以包括第一特征点的偏移量和偏移方向,比如,如图10所示,若第一特征点为特征点A,第一特征点A的偏移量为X1,且第一特征点A的偏移方向为方向s1。因此,与第一特征点对应的第一像素区域的校正数据可以包括第一像素区域的偏移量与偏移方向,第一像素区域在投影屏幕上相对于该第一像素区域的初始投影位置的偏移量则为该第一像素区域的偏移量。
以第一像素区域的偏移量和与其对应的第一特征点的偏移量相同,第一像素区域的偏移方向与和与其对应的第一特征点的偏移方向相同为例。在一些实施例中,第二投影图像中除第一像素区域之外的其他像素区域的偏移方向与第一像素区域的偏移方向相同,并且,第二投影图像中除第一像素区域之外的其他像素区域的偏移量小于该第一像素区域的偏移量。比如,第二像素区域为第二投影图像中除第一像素区域之外的其他像素区域,该第二像素区域的偏移量与第二像素区域和第一像素区域之间的距离呈负相关。即,第二像素区域和第一像素区域之间的距离越近,第二像素区域的偏移量越大(比如,和第一像素区域的偏移量越接近);第二像素区域和第一像素区域之间的距离越远,第二像素区域的偏移量越小(比如,越远离第一像素区域的偏移量)。因此,能够确保第二投影图像中多个像素区域的偏移量沿偏移方向逐渐减小,使得第二投影图像中相邻的像素区域能够平滑过渡,确保了图像的显示效果。
在一些实施例中,第二投影图像的校正数据包括第二投影图像中每个像素区域的校正数据,系统级芯片810确定第二投影图像的校正数据,即确定第二投影图像中每个像素区域的偏移量与偏移方向。显示控制芯片830接收第二投影图像的校正数据,并基于每个像素区域的校正数据,以及该像素区域中多个像素在该像素区域内的位置,确定每个像素的校正数据,每个像素的校正数据包括该像素的偏移量与偏移方向。基于每个像素的校正数据,显示控制芯片830可以确定该像素在图像坐标系中的校正位置。基于第二投影图像中每个像素在图像坐标系的校正位置,显示控制芯片830可以对第二投影图像进行校正处理,从而得到校正处理后的第二投影图像。
在一些实施例中,第二投影图像的校正数据包括第二投影图像中每个像素的校正数据,系统级芯片810确定第二投影图像的校正数据,即确定第二投影图像中每个像素的偏移量与偏移方向。例如,系统级芯片810基于第一像素区域的校正数据,可以确定第一像素区域中每个像素的偏移量与偏移方向,并向显示控制芯片传输第一像素区域中每个像素的偏移量与偏移方向。基于第二投影图像中每个像素的偏移量与偏移方向,显示控制芯片830可以对第二投影图像进行校正处理,从而得到校正处理后的第二投影图像。
因此,系统级芯片810可以根据至少一个第一特征点的偏移参数确定出第二投影图像中所有像素区域的偏移量和偏移方向,或者,也可以根据至少一个第一特征点的偏移参数确定出第二投影图像中所有像素的偏移量和偏移方向。
系统级芯片810还被配置为:当第二位置位于第一特征点对应的可调位置范围内,基 于第二位置和可调位置范围生成提示信息,并向显示控制芯片830发送提示信息。提示信息用于示用户第一特征点在第一方向上的可调偏移量。显示控制芯片830还被配置为将提示信息投影至投影屏幕。示例性地,投影屏幕可以是投影幕布,也可以是墙,或者其他可以显示被投影图像的装置。
示例性地。第一方向可以平行于像素行方向,或者可以平行于像素列方向。示例性地,系统级芯片810中可以预先存储每个特征点在各个方向上的可调位置范围。系统级芯片810在确定第一特征点的调整位置之后,可以确定第一特征点在第一方向上的可调位置范围。若第一特征点的第二位置位于该第一特征点对应的可调位置范围内,则可以基于该第二位置和可调位置范围生成该第一特征点对应的提示信息。
比如,如图11所示,当用户将第一特征点H由第一位置沿第一方向g移动至第二位置,该第一方向g平行于像素行方向时,以第一特征点H的当前位置的横坐标为1900,位置上限的横坐标为1890为例。系统级芯片810可以确定该第一特征点H的当前位置的横坐标与位置上限的横坐标之间的像素个数为10。因此,系统级芯片810基于该像素个数生成的提示信息01可以为“特征点H沿第一方向g还可以移动10个像素”。
在一些实施例中,提示信息还用于:提示用户第一特征点在第二方向上的可调偏移量,第二方向与第一方向不同。示例性地,如图12所示,若第一特征点为顶点,比如特征点A,则第二方向可以包括与第一方向g相反的方向和与第一方向g垂直的方向(即平行于像素列方向的方向)。若第一特征点为任一边上的中点,比如特征点H,则第二方向可以包括与第一方向g相反的方向。
在一些实施例中,提示信息还用于:提示用户第一投影图像中除第一特征点以外的其他特征点的可调偏移量和可调方向。
示例性地,如图12所示,若第一特征点为第一投影图像的顶点,比如第一特征点为特征点A,若第一特征点A在像素行方向上的可调偏移量为220个像素,在像素列方向上的可调偏移量为180个像素,说明第一投影图像的长边包括220个像素,短边包括180个像素。其中,长边的延伸方向平行于像素行方向,该短边的延伸方向平行于像素列方向。比如,对于特征点E,该特征点G为第一投影图像的长边上的中点,提示信息可以为:“特征点E在像素列方向上的可调偏移量为180个像素”。又比如,对于特征点G,该特征点G为第一投影图像的短边上的中点,提示信息可以为:“特征点G在像素行方向上的可调偏移量为220个像素。”
在一些实施例中,如图8所示,数据传输电路820可以是具有数据传输功能的任何一种传输电路,比如任何一种传输总线电路,示例性地,可以是ISA((Industry Standard Architecture,工业标准体系结构)总线传输电路、EISA(Extended Industry Standard Architecture,扩展工业标准结构)总线传输电路、VESA(Video Electronics Standards Association,视频电子标准协会)总线传输电路、PCI(Peripheral Component Interconnect,外设部件互连标准)总线传输电路或USB(Universal Serial Bus,通用串行总线)传输电路。当数据传输电路为USB传输电路,该USB传输电路可以通过USB协议分别与系统级芯片810和显示控制芯片830耦接,以进行校正数据的传输。因此,该系统级芯片810可以通过该USB协议向数据传输电路820传输数据量较大的校正数据,数据传输电路820可以将该数据量较大的校正数据传输至显示控制芯片830,有效提高了数据传输的效率与可传输的数据量。
在一些实施例中,如图13所示,数据传输电路820可以包括接口子电路201、开关子电路202和开关控制子电路203。
接口子电路201,耦接至系统级芯片810,且被配置为:接收来自系统级芯片810的校正数据。
开关子电路202,具有第一输入端2022和输出端2023。第一输入端2022通过接口子电路201耦接至系统级芯片810,输出端2023耦接至显示控制芯片830。开关子电路202被配置为通过第一输入端2022接收校正数据;响应于第一开关控制信号,控制第一输入端2022和输出端2023导通,向显示控制芯片830传输校正数据。
开关控制子电路203,与开关子电路202耦接,且被配置为响应于第一输入端2022接收的校正数据,向开关子电路202发送第一开关控制信号。
示例性地,接口子电路201可以为USB集线器(hub),接口子电路201通过USB协议分别耦接至系统级芯片810和第一输入端2022。输出端2023可以通过USB协议耦接至显示控制芯片,开关控制子电路203耦接至开关子电路202的控制端,已控制开关子电路202的输入通道与输出通道的连通。
在一些实施例中,如图13所示,数据传输电路820还可以包括连接器204,连接器204分别耦接至输出端2023和显示控制芯片830。连接器204被配置为:向显示控制芯片830传输来自输出端2023的校正数据。
如图13所示,第二投影图像的校正数据的传输路径为:系统级芯片10确定第二投影图像的校正数据并向接口子电路201传输校正数据,接口子电路201接收校正数据并向第一输入端2022传输校正数据。第一输入端2022接收校正数据,开关控制子电路203响应于第一输入端2022接收该校正数据,控制第一输入端2022与输出端2023导通,开关子电路202向连接器204传输校正数据,连接器204接收校正数据并向显示控制芯片830传输校正数据,显示控制芯片830接收校正数据。
在一些实施例中,如图13所示,开关子电路202还具有第二输入端2021,开关子电路202还被配置为通过该第二输入端2021接收来自第一外部设备传输的第一更新数据。开关控制子电路203还被配置为响应于第二输入端2021接收第一更新数据,向开关子电路202发送第二开关控制信号。开关子电路,还被配置响应于第二开关控制信号,控制第二输入端2021和输出端2023导通,向显示控制芯片830传输第一更新数据。发该显示控制芯片830还被配置为:基于第一更新数据进行数据更新,使得显示控制芯片830的数据更新方式较为便捷。
在一些实施例中,开关子电路202还被配置为向连接器204传输第一更新数据。连接器204还被配置为向显示控制芯片830传输第一更新数据。示例性地,第一更新数据可以为基于校正数据对第二投影图像进行校正处理的校正算法,该显示控制芯片830可以基于该第一更新数据对已存储在显示控制芯片830中的校正算法进行更新。通过第一外部设备,可以直接将第一更新数据传输至显示控制芯片830,以使得显示控制芯片830基于该第一更新数据进行数据更新,相较于手动对显示控制芯片830进行数据更新,提高了显示控制芯片830更新效率。
在一些实施例中,如图13所示,接口子电路201具有第三输入端2011。接口子电路201还被配置为:通过第三输入端接收来自第二外部设备传输的第二更新数据,并向系统级芯片810传输第二更新数据。系统级芯片810还被配置为:基于第二更新数据进行数据 更新。示例性地,第二更新数据可以为确定第二投影图像的校正数据的算法,该系统级芯片810可以基于第二更新数据对确定第二投影图像的校正数据的算法进行更新。使得系统级芯片810的数据更新方式较为便捷。
在一些实施例中,如图13所示,激光投影设备还可以包括主控电路205,主控电路205分别耦接至系统级芯片810和显示控制芯片。在正常投影显示第二投影图像的过程中,主控电路205被配置为向显示控制芯片830传输来自系统级芯片810传输的第二投影图像。
在一些实施例中,如图13所示,系统级芯片810还被配置为接收网络数据、语音数据和图像数据等。
综上所述,系统级芯片810可以确定第二投影图像的校正数据,数据传输电路820可以向显示控制芯片830传输数据量较大的校正数据,显示控制芯片830可以基于该第二投影图像的校正数据对第二投影图像进行校正处理,并将校正处理后的第二投影图像投影进行投影。可见,系统级芯片810和显示控制芯片830将第二投影图像的校正处理分为两个部分。系统级芯片810具有更强大的数据处理能力,可以获取数据量较大的第二投影图像的校正数据,显示控制芯片830仅需基于第二投影图像的校正数据对第二投影图像进行校正处理,提高了本公开实施例中提供的激光投影设备的工作效率。并且,显示控制芯片830对处理后的第二投影图像进行投影,可以确保第二投影图像被投影到投影屏幕时的显示效果。
此外,通过数据传输电路820的第二入端2021,可以向显示控制芯片830传输第一更新数据,通过数据传输电路820的第三输入端2011,可以向系统级芯片810传输第二更新数据。数据传输电路820分别耦接至系统级芯片和显示控制芯片。因此数据传输电路820可以向显示控制芯片830传输数据量较大的校正数据和第一更新数据,并向系统级芯片810传输数据量较大的第二更新数据,提高了数据传输与数据更新的效率。
另一方面,本公开的一些实施例提供一种投影图像的校正方法,如图14所示,该校正方法包括:
步骤1401、第一控制器响应于用户调整第一投影图像中任意一个特征点的位置的调整操作,确定特征点的调整位置。
上述步骤中,第一控制器为系统级芯片810,第二控制器为显示控制芯片830,第一投影图像包括多个特征点,以第一特征点为多个特征点中的任意一个特征点为例。
在一些实施例中,调整操作包括多个子位置调整操作,每个子位置调整操作用于指示将第一特征点由第一位置沿第一方向移动至第二位置。即,通过执行多个子位置调整操作可以将第一特征点由初始位置移动至调整位置。第一位置可以为初始位置,也可以为从初始位置移动至调整位置过程中的任一子位置调整操作对应的中间位置。第二位置可以为调整位置,也可以为从初始位置移动至调整位置过程中的任一子位置调整操作对应的中间位置。
示例性地,调整操作可以为用户在激光投影设备的遥控器上触发的操作,该遥控器上可以设置选中按钮、多个移动按钮和确认按钮。响应于用户在选中按钮上施加的触发操作,在第一投影图像的多个特征点中选定某一个特征点作为第一特征点。比如,在图9所示的8个特征点A至H中,使用该选中按钮可以选定特征点A作为第一特征点。响应于用户在第一移动按钮上施加的触发操作,第一特征点沿第一移动按钮对应的方向移动,用户每按下一次该第一移动按钮,第一特征点沿第一移动按钮对应的方向移动一个像素的距离,第 一移动按钮可以为多个移动按钮中的任意一个移动按钮。比如,第一移动按钮对应的方向为第一方向,则可以通过多次按下第一移动按钮,比如5次按下第一移动按钮,则表示要将目标特征沿第一方向移动5个像素的距离。响应于用户在确认按钮上施加的触发操作,确定用户选定第一特征点或者确定用户对第一特征点执行第一移动按钮对应的操作。
比如,如图9所示,当用户选定特征点A作为第一特征点,可以按下确认按钮,第一控制器即可确定特征点A为第一特征点。比如,用户可以在按下5次第一移动按钮(调整操作包括5个子位置调整操作)后,按下确定按钮,第一控制器即可确定要将第一特征点沿第一方向移动5个像素的距离。因此,用户通过控制激光投影设备的遥控器,即可调整第一特征点的位置。
步骤1402、第一控制器基于特征点的调整位置确定第二投影图像的校正数据。
步骤1403、第一控制器向第二控制器发送校正数据。
步骤1404、第二控制器接收校正数据,基于校正数据对第二投影图像进行校正处理,并向光机传输校正处理后的第二投影图像的图像信号。
步骤1405、光机利用校正处理后的第二投影图像的图像信号对照明光束进行调制,获得投影光束。
步骤1406、镜头将投影光束投射成像。
在一些实施例中,如图15所示,该校正方法包括:
步骤1501、第一控制器基于特征点的初始位置和调整位置,确定特征点的偏移参数,偏移参数包括偏移量和偏移方向。
步骤1502、第一控制器基于特征点的偏移参数,确定第二投影图像中与特征点对应的一个或多个像素区域的校正数据。
在一些实施例中,偏移量可以是以长度单位为计量单位的投影偏移量,也可以是以像素个数为计量单位的像素偏移量,该投影偏移量与像素偏移量之间存在对应关系,并且该对应关系可以预先存储于第一控制器中。以第一投影图像中的一个特征点对应于第二投影图像中的一个像素区域,比如第一特征点对应于第一像素区域,第一特征点的偏移量为投影偏移量为例,则第一像素区域的投影偏移量与第一特征点的投影偏移量相同。示例性地,第一控制器在确定第二投影图像中每个像素区域的投影偏移量之后,可以基于每个像素区域的投影偏移量,从预先存储的像素区域的投影偏移量与像素偏移量的对应关系确定每个像素区域的像素偏移量,并可以基于该像素区域的像素偏移量和偏移方向确定为像素区域在图像坐标系中的校正位置。
示例性地,第一投影图像和第二投影图像的分辨率均可以为M×N,M为第一投影图像中每列像素的个数(即M为像素行数),N为第一投影图像中每行像素的个数(即N为像素列数),M和N均为大于1的正整数,比如M为2160,N为3840,则在像素行方向上,可以移动的像素偏移量为3840,在像素列方向上,可以移动的像素偏移量为2160。
下述以像素区域的偏移量为像素区域在图像坐标系中的像素偏移量为例,偏移量进行说明,图像坐标系可以为投影屏幕上的屏幕坐标系。如图9所示,屏幕坐标系可以为二维坐标系XY,屏幕坐标系XY的横轴X平行于像素行方向,屏幕坐标系的纵轴Y平行于像素列方向,该屏幕坐标系XY的原点可以为显示的第一投影图像00的特征点A。
在一些实施例中,如图9所示,第一特征点的偏移量、第一像素区域和第二像素区域的偏移量均可以包括在像素列方向上的第一偏移量和在像素行方向上的第二偏移量。第一 特征点的偏移方向、第一像素区域的偏移方向和第二像素区域的偏移方向可以包括平行于像素行方向的第一偏移方向s1和第二偏移方向s2,以及平行于像素列方向的第三偏移方向s3和第四偏移方向s4。第一偏移方向s1和第三偏移方向s3均为远离屏幕坐标系XY的原点的方向,第二偏移方向s2和第四偏移方向s4均为靠近屏幕坐标系XY的原点的方向。第一偏移方向s1和第二偏移方向s2相反,第三偏移方向s3和第四偏移方向s4相反。
示例性地,第一特征点的初始位置和调整位置可以用屏幕坐标系中的坐标来表示,也就是说,初始位置和调整位置可以包括横坐标和纵坐标。第一控制器在确定第一特征点的调整位置之后,可以分别确定第一差值和第二差值。第一差值为调整位置的横坐标和初始位置的横坐标的差值,第二差值为调整位置的纵坐标和初始位置的纵坐标的差值。基于第一差值和第二差值,第一控制器可以确定第一特征点的第一偏移量为第一差值的绝对值,并可以确定第一特征点的第二偏移量为第二差值的绝对值。
示例性地,如图9所示,第一控制器可以分别判断第一差值是否大于0,以及第二差值是否大于0。若第一差值和第二差值均等于0,则第一控制器可以确定第一特征点未发生偏移。若第一差值大于0,则第一控制器可以确定第一特征点在像素行方向上朝远离屏幕坐标系XY原点的方向移动了第一差值。由此第一控制器可以确定第一特征点的偏移方向为第一偏移方向s1。若第一差值小于0,则第一控制器可以确定第一特征点在像素行方向上朝靠近屏幕坐标系XY原点的方向移动了第一差值。由此第一控制器可以确定第一特征点的偏移方向为第二偏移方向s2。
示例性地,若第二差值大于0,则第一控制器可以确定第一特征点在像素列方向上朝远离屏幕坐标系XY原点的方向移动了第二差值。由此第一控制器可以确定第一特征点的偏移方向为第三偏移方向s3。若第二差值小于0,则第一控制器可以确定第一特征点在像素行方向上朝靠近屏幕坐标系XY原点的方向移动了第二差值。由此第一控制器可以确定第一特征点的偏移方向为第四偏移方向s4。
示例性地,第一控制器可以基于第一特征点的第一偏移量,确定第二投影图像中第一像素区域以及第二像素区域的第一偏移量。并根据每个像素区域的第一偏移量。第一控制器则可以基于第二投影图像中每个像素区域的第一偏移量、偏移方向和该像素区域在第二投影图像中的初始位置,确定像素区域在图像坐标系中像素列方向上的调整位置,并基于每个像素区域的第一偏移量和偏移方向,确定每个像素区域中每一个像素的第一偏移量,进而基于每一个像素的初始位置,获得每一个像素在图像坐标系中像素列方向上的校正位置。
示例性地,第一控制器可以基于第一特征点的第二偏移量,确定第一像素区域和第二像素区域的第二偏移量。并根据每个像素区域的第二偏移量,确定该像素区域的第二偏移量。则第一控制器可以基于第二投影图像中每个像素区域的第二偏移量、偏移方向和该像素区域在第二投影图像中的初始位置,确定像素区域在图像坐标系中像素行方向的调整位置,并基于每个像素区域的第一偏移量和偏移方向,确定每个像素区域中每一个像素的第一偏移量,进而基于每一个像素的初始位置,获得每一个像素在图像坐标系中像素列方向上的校正位置。
示例性地,第一控制器可以基于每一个像素在图像坐标系中像素列方向上的校正位置和每一个像素在图像坐标系中像素列方向上的校正位置,获取每一个像素在图像坐标系中的校正位置,进而可以将第二投影图像中的每一个像素调整至校正位置。
示例性地,若第一特征点的第一偏移量等于0,则第一控制器可以确定第一像素区域和第二像素区域的第一偏移量均为0,即,第二投影图像中每个像素区域的第一偏移量均为0。若第一特征点的第二偏移量等于0,则第一控制器可以确定第一像素区域和第二像素区域的第二偏移量均为0,即,第二投影图像中每个像素区域的第二偏移量均为0。
示例性地,如图10所示,假设第一特征点为第一投影图像00的左上顶点A,第一特征点A的第一偏移量为X1(X1不为0),第一特征点A的第二偏移量为0,第一特征点A的偏移方向为方向s1。由于第一像素区域的偏移量和与其对应的第一特征点的偏移量相同,第一像素区域的偏移方向与和与其对应的第一特征点的偏移方向相同。则第一控制器可以根据第一特征点A的第一偏移量X1,确定第二投影图像中第一特征点A对应的第一像素区域的第一偏移量为X1,并可以确定第一像素区域的第一偏移量。由于第一特征点A的第二偏移量为0,则第一控制器可以确定第二投影图像中每个像素区域的第二偏移量为0。并且,系第一控制器可以基于每个像素区域的第一偏移量确定该像素区域的每个像素的第一偏移量,进而可以根据每个像素的第一偏移量、第一偏移方向和每个像素在图像坐标系的初始位置,确定每个像素的校正位置,进而将像素调整至该校正位置。
在一些实施例中,调整操作包括多个子位置调整操作,子位置调整操用于将第一特征点由第一位置沿第一方向移动至第二位置。如图16所示,投影图像的校正方法还包括:
步骤1601,当第二位置位于第一特征点对应的可调位置范围内时,第一控制器基于第二位置和可调位置范围生成提示信息。提示信息被配置为提示用户第一特征点在第一方向上的可调偏移量。
示例性地,第一特征点在第一方向的可调位置范围可以包括位置上限和位置下限,位置上限和位置下限均可以用在屏幕坐标系中的坐标来表示。相应的,位置上限和位置下限均可以包括横坐标和纵坐标。
示例性地,若第一方向平行于像素行方向,且该第一方向为靠近位置上限(或者位置下限)的方向,则第一控制器可以确定第二位置的横坐标与位置上限的横坐标(或者位置下限的横坐标)之间的像素个数p,并可以基于该像素个数p生成提示信息。示例性地,该提示信息可以为“沿第一方向还能够移动p个像素”。若第一方向平行于像素列方向,且第一方向为靠近位置下限(或者位置上限)的方向,则第一控制器可以确定该第二位置的纵坐标与位置上限的纵坐标(或者位置上限的纵坐标)之间的像素个数,并可以基于该像素个数生成提示信息。
步骤1602、第一控制器向第二控制器传输提示信息。
步骤1603、第二控制器接收提示信息,并将提示信息投影至投影屏幕。
在一些实施例中,提示信息还用于:提示用户第一特征点在第二方向上的可调偏移量,第二方向与第一方向不同。
示例性地,若第一特征点为顶点,比如特征点A,第一方向为平行于像素行方向,且靠近位置上限的方向,则第一控制器可以检测该第一特征点的第二位置的横坐标与位置上限的横坐标之间的像素个数。若该像素个数大于0,则第一控制器可以确定该第一特征点的第二方向包括与第一方向相反的方向,相应的,该提示信息可以为“第一特征点还可以在与第一方向相反的方向上移动”。若该像素个数等于0,则第一控制器可以确定该第一特征点的第二方向不包括与第一方向相反的方向。
示例性地,第一控制器还可以检测第二位置的纵坐标与位置上限的纵坐标之间的像素 个数。若该像素个数大于0,则第一控制器可以确定该第一特征点的第二方向包括平行于像素列方向,且靠近位置上限的方向,相应的,该提示信息可以为“第一特征点还可以在像素列方向且靠近位置上限的方向上移动”。若该像素个数等于0,则第一控制器可以确定该第一特征点的第二方向不包括平行于像素列方向,且靠近位置上限的方向。
示例性地,第一控制器还可以检测第二位置的纵坐标与位置下限的纵坐标之间的像素个数。若该像素个数大于0,则第一控制器可以确定该第一特征点的第二方向包括平行于像素列方向,且靠近位置下限的方向,相应的,该提示信息可以为“第一特征点还可以在像素列方向且靠近位置下限的方向上移动”。若该像素个数等于0,则第一控制器可以确定该第一特征点的第二方向不包括平行于像素列方向,且靠近位置下限的方向。
示例性地,第二控制器还可以显示用于指示该第一特征点能够移动的方向的方向标识,以使得用户可以直观的看到该第一特征点可移动的方向。比如,如图12所示,该第一特征点可移动的方向标识r1和方向标识r2,该方向标识r1所指示的方向与第一方向g1相同,方向标识r2所指示的方向与第二方向g2相同。
激光投影设备在确定第二方向之后,可以基于第二位置和第二方向的可调位置范围确定第一特征点在第二方向上的可调偏移量,并可以基于该第一特征点在第二方向上的可调偏移量生成该提示信息。比如,提示信息可以为:“第一特征点还可以在像素列方向且靠近位置下限的方向上移动10个像素”。
在一些实施例中,提示信息还用于:提示用户第一投影图像中除第一特征点之外的特征点的可调偏移量和可调方向。
对于步骤1401至步骤1406,步骤1501至步骤1502以及步骤1601至步骤1603执行顺序,本公开并不限定,比如,步骤1501至步骤1502可以在步骤1601至步骤1603之前执行,也可以在步骤1601至步骤1603之后执行。
通过本公开实施例提供过的图像校正方法,可以在第二投影图像投影至投影屏幕之前,就对第二投影图像进行校正处理,以使得投影屏幕显示的是校正后的第二投影图像,避免其超出投影屏幕的范围。比如,如图17所示,由于某一外部原因,导致激光投影设备投射出的第二投影图像超出了投影屏幕的范围,示例性地,该外部原因可以为用户不小心挪动了激光投影设备。采用本公开实施例提供过的投影图像校正方法可以将第二投影图像进行校正,以使得投影屏幕显示的校正后的第二投影图像如图18所示,在投影屏幕的范围内。
又一方面,本公开的一些实施例提供了一种计算机可读存储介质(例如,非暂态计算机可读存储介质),该计算机可读存储介质中存储有计算机程序指令,计算机程序指令在计算机(例如,激光投影设备)上运行时,使得计算机执行如上述实施例中任一实施例所述的投影图像的校正方法。
示例性地,上述计算机可读存储介质可以包括,但不限于:磁存储器件(例如,硬盘、软盘或磁带等),光盘(例如,CD(Compact Disk,压缩盘)、DVD(Digital Versatile Disk,数字通用盘)等),智能卡和闪存器件(例如,EPROM(Erasable Programmable Read-Only Memory,可擦写可编程只读存储器)、卡、棒或钥匙驱动板等)。本公开描述的各种计算机可读存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读存储介质。术语“机器可读存储介质”可包括但不限于,无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
又一方面,本公开的一些实施例还提供了一种计算机程序产品。该计算机程序产品包括计算机程序指令,在计算机(例如,激光投影设备)上执行该计算机程序指令时,该计算机程序指令使计算机执行如上述实施例所述的投影图像的校正方法。
又一方面,本公开的一些实施例还提供了一种计算机程序。当该计算机程序在计算机(例如,激光投影设备)上执行时,该计算机程序使计算机执行如上述实施例所述的投影图像的校正方法。
上述计算机可读存储介质、计算机程序产品及计算机程序的有益效果和上述一些实施例所述的电子设备的通信方法的有益效果相同,此处不再赘述。
以上所述,仅为本公开的具体实施方式,但本公开的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本公开揭露的技术范围内,想到变化或替换,都应涵盖在本公开的保护范围之内。因此,本公开的保护范围应以所述权利要求的保护范围为准。
Claims (19)
- 一种激光投影设备,包括:光源组件,被配置为提供照明光束;光机,被配置为利用图像信号对所述照明光束进行调制,以获得投影光束;镜头,被配置为将所述投影光束投射成像;以及电路系统架构,被配置为控制所述光源组件发出照明光束;所述电路系统架构包括:第一控制器,被配置为响应于用户调整第一投影图像中任意一个特征点的位置的调整操作,确定所述特征点的调整位置;基于所述特征点的初始位置和所述调整位置,确定第二投影图像的校正数据;向第二控制器传输所述校正数据;所述第二控制器,耦接至所述光机与所述第一控制器,且被配置为接收所述校正数据,基于所述校正数据对所述第二投影图像进行校正处理,并向所述光机传输校正处理后的第二投影图像的图像信号,以使所述光机利用校正处理后的第二投影图像的图像信号对所述照明光束进行调制,以获得投影光束。
- 根据权利要求1所述的激光投影设备,其中,所述第一控制器包括系统级芯片,第二控制器包括显示控制芯片。
- 根据权利要求1或2所述的激光投影设备,其中,所述第二投影图像包括多个像素区域;所述第一控制器还被配置为:基于所述特征点的初始位置和所述调整位置,确定所述特征点的偏移参数,所述偏移参数包括偏移量和偏移方向;基于所述特征点的偏移参数,确定所述第二投影图像中与所述特征点对应的一个或多个所述像素区域的校正数据。
- 根据权利要求1或2所述的激光投影设备,其中,所述调整操作包括多个子位置调整操作,所述子位置调整操作用于将所述特征点由第一位置沿第一方向移动至第二位置;所述第一控制器还被配置为:当所述第二位置位于所述特征点对应的可调位置范围内,基于所述第二位置和所述可调位置范围生成提示信息,向所述第二控制器发送所述提示信息;所述提示信息用于提示用户所述特征点在所述第一方向上的可调偏移量;所述第二控制器还被配置为:接收所述提示信息,并将所述提示信息投影至投影屏幕。
- 根据权利要求4所述的激光投影设备,其中,所述提示信息还用于:提示用户所述特征点在第二方向上的可调偏移量,所述第二方向与所述第一方向不同。
- 根据权利要求4所述的激光投影设备,其中,所述提示信息还被用于:提示用户所述第一投影图像中除所述特征点以外的其他特征点的可调偏移量和可调方向。
- 根据权利要求5或6所述的激光投影设备,其中,所述第二控制器为数字光处理DLP芯片。
- 一种投影图像的校正方法,包括:第一控制器响应于用户调整第一投影图像中任意一个特征点的位置的调整操作,确定所述特征点的调整位置;所述第一控制器基于所述特征点的调整位置确定第二投影图像的校正数据;所述第一控制器向第二控制器发送所述校正数据;所述第二控制器接收所述校正数据,基于所述校正数据对所述第二投影图像进行校正 处理,并向光机传输校正处理后的第二投影图像的图像信号;所述光机利用校正处理后的第二投影图像的图像信号对所述照明光束进行调制,获得投影光束;镜头将所述投影光束投射成像。
- 根据权利要求8所述的校正方法,还包括,所述第一控制器基于所述特征点的初始位置和所述调整位置,确定所述特征点的偏移参数,所述偏移参数包括偏移量和偏移方向;所述第一控制器基于所述特征点的偏移参数,确定所述第二投影图像中与所述特征点对应的一个或多个所述像素区域的校正数据。
- 根据权利要求9所述的校正方法,其中,所述调整操作包括多个子位置调整操作,所述子位置调整操作用于将所述特征点由第一位置沿第一方向移动至第二位置;所述方法还包括,当所述第二位置位于所述特征点对应的可调位置范围内时,所述第一控制器基于所述第二位置和所述可调位置范围生成提示信息;所述提示信息用于提示用户所述特征点在所述第一方向上的可调偏移量;所述第一控制器向所述第二控制器传输所述提示信息;所述第二控制器接收所述提示信息,并将所述提示信息投影至投影屏幕。
- 根据权利要求10所述的校正方法,其中,所述提示信息还用于:提示用户所述特征点在第二方向上的可调偏移量,所述第二方向与所述第一方向不同。
- 根据权利要求11所述的校正方法,其中,所述提示信息还用于:提示用户所述第一投影图像中除所述特征点以外的其他特征点的可调偏移量和可调方向。
- 根据权利要求8至12任意一项所述的校正方法,其中,所述第一控制器包括系统级芯片,第二控制器包括显示控制芯片。
- 一种激光投影设备,包括光源组件,被配置为提供照明光束;光机,被配置为利用图像信号对所述照明光束进行调制,以获得投影光束;镜头,被配置为将所述投影光束投射成像;以及电路系统架构,被配置为控制所述光源组件发出照明光束;所述电路系统架构包括:系统级芯片,被配置为响应于用户调整第一投影图像中任意一个特征点的位置的调整操作,确定所述特征点的调整位置;基于所述特征点的初始位置和所述调整位置,确定第二投影图像的校正数据;向显示控制芯片传输所述校正数据;和所述显示控制芯片,耦接至所述系统级芯片,且被配置为:接收所述校正数据,基于所述校正数据对所述第二投影图像进行校正处理,并向所述光机传输校正处理后的第二投影图像的图像信号,以使所述光机利用校正处理后的第二投影图像的图像信号对所述照明光束进行调制,以获得投影光束。
- 如权利要求14所述的激光投影设备,其中,所述电路系统架构还包括数据传输电路,所述显示控制芯片通过所述数据传输电路耦接至所述系统级芯片;其中,所述数据传输电路包括:接口子电路,耦接至所述系统级芯片,且被配置为:接收来自所述系统级芯片的所述 校正数据;开关子电路,具有第一输入端和输出端;所述第一输入端通过所述接口子电路耦接至所述系统级芯片,所述输出端耦接至所述显示控制芯片,所述开关子电路被配置为通过所述第一输入端接收所述校正数据;和开关控制子电路,与所述开关子电路耦接,且被配置为响应于所述第一输入端接收所述校正数据,向所述开关子电路发送第一开关控制信号;所述开关子电路,还被配置为响应于所述第一开关控制信号,控制所述第一输入端和所述输出端导通,向所述显示控制芯片传输所述校正数据。
- 如权利要求15所述的激光投影设备,其中,所述数据传输电路包括USB传输电路。
- 根据权利要求15或16所述的激光投影设备,其中,所述开关子电路还具有第二输入端;所述开关子电路还被配置为通过所述第二输入端接收来自第一外部设备的第一更新数据;所述开关控制子电路还被配置为:响应于所述第二输入端接收所述第一更新数据,向所述开关子电路发送第二开关控制信号;所述开关子电路,还被配置响应于所述第二开关控制信号,控制所述第二输入端和所述输出端导通,向所述显示控制芯片传输所述第一更新数据;所述显示控制芯片还被配置为:接收所述第一更新数据,并基于所述第一更新数据进行数据更新。
- 根据权利要求17所述的激光投影设备,其中,所述接口子电路具有第三输入端;所述接口子电路还被配置为:通过所述第三输入端接收来自第二外部设备的第二更新数据,并向所述系统级芯片传输所述第二更新数据;所述系统级芯片还被配置为:接收所述第二更新数据,并基于所述第二更新数据进行数据更新。
- 根据权利要求18所述的激光投影设备,其中,所述显示控制芯片为数字光处理DLP芯片。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012127993A (ja) * | 2010-12-13 | 2012-07-05 | Seiko Epson Corp | プロジェクターおよびプロジェクターの画面形状補正方法 |
CN103034030A (zh) * | 2011-09-30 | 2013-04-10 | 精工爱普生株式会社 | 投影仪以及投影仪的控制方法 |
CN107396075A (zh) * | 2017-08-08 | 2017-11-24 | 海信集团有限公司 | 一种投影图像校正信息的生成方法及生成装置 |
CN109951691A (zh) * | 2017-12-20 | 2019-06-28 | 深圳光峰科技股份有限公司 | 投影画面的校正方法、装置以及投影系统 |
WO2020261741A1 (ja) * | 2019-06-25 | 2020-12-30 | パナソニックIpマネジメント株式会社 | 投影システム |
CN113315959A (zh) * | 2021-06-03 | 2021-08-27 | 青岛海信激光显示股份有限公司 | 激光投影设备及投影图像的校正方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012127993A (ja) * | 2010-12-13 | 2012-07-05 | Seiko Epson Corp | プロジェクターおよびプロジェクターの画面形状補正方法 |
CN103034030A (zh) * | 2011-09-30 | 2013-04-10 | 精工爱普生株式会社 | 投影仪以及投影仪的控制方法 |
CN107396075A (zh) * | 2017-08-08 | 2017-11-24 | 海信集团有限公司 | 一种投影图像校正信息的生成方法及生成装置 |
CN109951691A (zh) * | 2017-12-20 | 2019-06-28 | 深圳光峰科技股份有限公司 | 投影画面的校正方法、装置以及投影系统 |
WO2020261741A1 (ja) * | 2019-06-25 | 2020-12-30 | パナソニックIpマネジメント株式会社 | 投影システム |
CN113315959A (zh) * | 2021-06-03 | 2021-08-27 | 青岛海信激光显示股份有限公司 | 激光投影设备及投影图像的校正方法 |
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