WO2022002190A1 - 视频信号处理***、方法、投影***以及投影方法 - Google Patents

视频信号处理***、方法、投影***以及投影方法 Download PDF

Info

Publication number
WO2022002190A1
WO2022002190A1 PCT/CN2021/103961 CN2021103961W WO2022002190A1 WO 2022002190 A1 WO2022002190 A1 WO 2022002190A1 CN 2021103961 W CN2021103961 W CN 2021103961W WO 2022002190 A1 WO2022002190 A1 WO 2022002190A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
frame
color
monochromatic
image frame
Prior art date
Application number
PCT/CN2021/103961
Other languages
English (en)
French (fr)
Inventor
余新
胡飞
陈晨
弓殷强
李屹
Original Assignee
深圳光峰科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳光峰科技股份有限公司 filed Critical 深圳光峰科技股份有限公司
Publication of WO2022002190A1 publication Critical patent/WO2022002190A1/zh

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/12—Edge-based segmentation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/60—Editing figures and text; Combining figures or text
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/90—Determination of colour characteristics

Definitions

  • the present application relates to the technical field of projection, and in particular, to a video signal processing system, method, projection system and projection method.
  • DLP Digital Light Processing
  • the core of DLP projection display method is to provide a spatial light modulation Unit, digital microlens device (DMD) as a reflective spatial light modulator occupies a very important position in the field of projection applications.
  • DMD digital microlens device
  • the reflective DMD system has more advantages in heat dissipation, so it is extremely beneficial to the development of a high-brightness projection system.
  • the states of a single microlens are only “on” and “off”. Therefore, in order to display pictures with different grayscales, it is necessary to use PWM modulation to quickly switch the on and off states.
  • the switching speed of the digital micromirror between on and off determines the final grayscale fineness that can be displayed, that is, the bit depth of the color.
  • DMD for projection display is mainly a solution of three DMDs, that is, a DLP projection system contains three DMDs, and a set of light splitting system is used to split the input white light, so that each DMD only has It is responsible for the modulation of a color, and then after combining light and lens magnification, it is finally displayed on the screen.
  • a DLP projection system contains three DMDs, and a set of light splitting system is used to split the input white light, so that each DMD only has It is responsible for the modulation of a color, and then after combining light and lens magnification, it is finally displayed on the screen.
  • Using multiple DMDs can obtain multiple bandwidths, so it can display higher frame rates without sacrificing bit depth. image, but the cost of the three-piece DMD solution is very high, which is not conducive to promotion.
  • the purpose of the present application is to provide a video signal processing system, method, projection system and projection method to improve the above technical problems.
  • an embodiment of the present application provides a video signal processing system, which is applied to a projection system.
  • the video signal processing system includes: an image processing unit, and the image processing unit is configured to divide each frame of color image into M monochromatic lights image, and combine the segmented monochromatic light images of the same color to form at least one monochromatic image frame, the image processing unit is also used to output the monochromatic image frame to the DLP projection device, wherein M is greater than or equal to 3 positive integer of .
  • the projection system includes M DLP projection devices, and the image processing unit is configured to output different monochrome image frames to different DLP projection devices.
  • the image processing unit is specifically configured to: divide consecutive M frames of color images into groups, divide each image frame in each group into a plurality of monochromatic light images, and divide the separated images of the same color into groups. Monochromatic light images are combined in image frame order to form a monochrome image frame.
  • the durations corresponding to each monochromatic light image are equal.
  • the image processing unit is configured to divide each frame of the color image into M monochromatic light images, and combine the divided monochromatic light images of the same color to form at least one monochromatic image frame and at least one mixed-color image frame, the image processing unit is further configured to output the single-color image frame and the mixed-color image frame to the DLP projection device.
  • each monochrome image frame and each mixed-color image frame have equal durations.
  • an embodiment of the present application further provides a video image processing method, which is applied to a projection system, where the projection system includes a DLP projection device, and the method includes: dividing each frame in a color image into M monochromatic light images, wherein M is a positive integer greater than or equal to 3; the segmented monochromatic light images of the same color are combined to form at least one monochromatic image frame; the monochromatic image frame is output to the DLP projection device.
  • dividing each frame of the consecutive M frames of color images into M monochromatic light images includes: dividing the consecutive M frames of color images into groups; dividing each frame of the image in each group into a plurality of monochromatic light images; the separated monochromatic light images of the same color are combined according to the image sequence to form a monochromatic image frame.
  • an embodiment of the present application further provides a projection system, including the above-mentioned video signal processing system, a DLP projection device, and a light combining element.
  • the DLP projection device includes a controller and a digital micro-lens.
  • the controller receives a single-color image frame output by the signal processing system, drives the digital micro-lens in time series, and guides the digital micro-lens to the light combining element.
  • the light combining element is used for combining the light rays of a plurality of monochromatic image frames and then outputting them to a subsequent light path.
  • an embodiment of the present application further provides a projection method, which is applied to the above-mentioned projection system.
  • the projection method includes: dividing each frame in a color image into M monochromatic light images; The monochromatic light images are combined to form at least one monochromatic image frame; the monochromatic image frame is output to the DLP projection device, the DLP projection device includes a controller and a digital microlens, the controller receives the monochromatic image frame, and drives the timing sequence a digital microlens; and combine the light rays of a plurality of monochromatic image frames and then emit the light to a subsequent light path.
  • the video signal processing system, method, projection system and projection method provided by the present application form a monochromatic light image by dividing each frame in a color image, and then combine the divided monochromatic light images of the same color to form At least one single-color image frame, and the single-color image frame is transmitted to the DLP projection device for guidance, and finally the light is combined by the light combining element and then emitted. Since each monochromatic image frame is formed by the combination of multiple monochromatic light images, a monochromatic image frame includes multiple monochromatic light images of the same color, which is equivalent to being formed by multiple frames of monochromatic light images, so its The frame rate is improved relative to the original color image.
  • FIG. 1 is a schematic structural diagram of a projection system shown in the present application.
  • FIG. 2 is a schematic flow chart of the projection system shown in FIG. 1 during display
  • FIG. 3 is a schematic structural diagram of another projection system shown in the present application.
  • FIG. 4 is a structural block diagram of a video signal processing system provided in the first embodiment
  • FIG. 5 is a flowchart of a video signal processing method provided in the first embodiment
  • FIG. 6 is a schematic flowchart of image segmentation in the video signal processing method provided in the first embodiment
  • FIG. 7 is a schematic flowchart of another image segmentation in the video signal processing method provided in the first embodiment
  • FIG. 8 is a schematic flowchart of image segmentation performed by the video signal processing system provided in the second embodiment
  • FIG. 9 is a flowchart of a video signal processing method provided in the second embodiment.
  • FIG. 10 is a schematic structural diagram of a projection system provided by a third embodiment of the present application.
  • FIG. 11 is a structural block diagram of a DLP projection apparatus provided by the third embodiment of the present application.
  • FIG. 12 is a flowchart of a projection method provided in the third embodiment.
  • a DLP projection device 3 is included, and the DLP projection device 3 includes a DMD device 4.
  • the signal source is processed by the image processing unit 2, it is displayed by the same DLP projection device 3 according to the time sequence. , and project to screen 5.
  • FIG. 2 when each frame of image is displayed, it is displayed according to a preset time sequence. For example: in the period T of a frame of image, the image light of red, blue and green is included. When displaying, the red image light is displayed in the first 1/3 period, and the red image light is displayed in the second 1/3 period. , showing green image light, and in the last 1/3 period, showing blue image light.
  • the display order can be adjusted as needed.
  • This kind of projection system 1a needs to use the visual persistence effect of the human eye when displaying, and divide the duration of one frame into three or more parts, and assign them to different colors for time-sharing display.
  • the flip speed can be guaranteed to reach a frame rate of 120 Hz with a bit depth of 8 bits.
  • you want to increase the frame rate of the image on this basis you need to sacrifice a part of the bit depth.
  • the projection device 1b includes a multi-chip DMD device, and after the image processing unit 2 processes the image signal, it is sent to the multiple DMD devices 4 of the same DLP projection device 3 according to the three primary color lights. Guide, and project to screen 5 after combining light.
  • the disadvantage of this method is that the DLP projection device 3 including the multi-chip DMD device 4 is expensive and the cost is extremely high.
  • the inventor of the present application proposes a video signal processing system, method, projection system and projection method, which can improve the image display frame rate without changing the bit depth.
  • this embodiment provides a video signal processing system 100 , which can be applied to the projection system 10 shown in FIG. 7 , wherein the projection system 10 includes M DLP projection apparatuses 200 , and each DLP projection apparatus 200 includes a monolithic DMD device.
  • the video signal processing system 100 includes an image processing unit 110 .
  • the image processing unit 110 is configured to divide each frame in the color image into M monochromatic light images, and combine the divided monochromatic light images of the same color to form at least one monochromatic image frame, where M is greater than or a positive integer equal to 3.
  • the color image does not specifically mean that the video signal image is color, but refers to that the video signal image is composed of a plurality of primary color images, and the frame rate of the color image is the first frame rate.
  • the M monochromatic light images divided into each frame in the color image may all be combined according to different colors to form M monochromatic image frames.
  • part of the monochromatic light images may form a monochromatic image frame, and the remaining monochromatic light images may form a mixed color image frame.
  • Each frame of color image can be divided into M monochromatic light images, and the time duration corresponding to each monochromatic light image is equal. And as an example, the colors of the M monochromatic light images into which each frame of color image is split are corresponding to each other. For example: the first frame of color image is divided into three colors of red, green and blue monochromatic light images, correspondingly, the second and third frame of color images are also divided into three kinds of red, green and blue. Color monochromatic light image.
  • M is equal to 3, and each frame of color image is divided into monochromatic light images of three primary colors of red, green, and blue.
  • the advantage of this arrangement is that, since the light source usually adopts three primary color light sources, it is also more convenient to implement a monochromatic light image that is divided into three primary colors.
  • the image processing unit 110 combines all the monochromatic light images of the same color to form a monochromatic image frame, wherein the duration corresponding to each monochromatic light image is 1/M of the duration corresponding to one frame of color image,
  • the monochromatic image frame formed by the combination of monochromatic light images of the same color includes one or more monochromatic light images.
  • One monochromatic light image actually forms a frame, so its frame rate is not 1/M of the original color image.
  • the image processing unit is configured to divide consecutive M frames in the color image, and each frame is divided to form M monochromatic image lights, that is, to form M*M monochromatic image lights, each monochromatic image
  • the frame includes a monochromatic light image split from M consecutive image frames. Therefore, it is equivalent to combining the monochromatic light images of the original M frames of images within a monochromatic image frame period T, so the equivalent period of the image frame is (1/M)T, that is, the frame of the monochromatic image frame
  • the second frame rate is M times the first frame rate, that is, the frame rate is M times that of the single DMD system shown in FIG. 1 .
  • the image processing unit 110 is further configured to output the monochrome image frame to the DLP projection apparatus 200.
  • a projection system 10 includes M DLP projection apparatuses 200, and the image processing unit 110 can combine the M monochrome image frames formed by The image frames are respectively output to different projection apparatuses 200 , where different DLP projection apparatuses 200 refer to M DLP projection apparatuses 200 in the projection system 10 . That is, send the monochrome image frame formed by the combination of each red image light to a DLP projection device 200, send the monochrome image frame formed by the combination of each blue image light to a DLP projection device 200, and combine each green image light The resulting monochrome image frame is sent to a DLP projection device 200 .
  • a projection system 10 may also include only one projection device 200.
  • the image processing unit 110 when the image processing unit 110 outputs the M monochrome image frames to the projection device 200, it may The M monochrome image frames are output to the projection device 200 in sequence, and the projection device 200 drives and displays the M monochrome image frames in accordance with the time sequence. Due to the persistence of vision effect, the user can still view normal images.
  • a projection system 10 may also include more than one and less than M projection apparatuses 200 .
  • the image processing unit 110 when the image processing unit 110 outputs M monochrome image frames to the projection apparatus 200 , the M monochrome image frames may be sent to different projection apparatuses 200 in an evenly distributed manner according to a preset time sequence, so that the display durations of each projection apparatus 200 are equal.
  • the image processing unit 110 may be composed of one or more processors, and each processor may include one or more processing cores.
  • the processor can be implemented in at least one hardware form among digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), and programmable logic array (Programmable Logic Array, PLA). .
  • the processor may integrate one or a combination of a central processing unit (Central Processing Unit, CPU), a graphics processor (Graphics Processing Unit, GPU), a modem, and the like.
  • the video signal processing system 100 provided in this embodiment can process a color image, divide each frame in the color image to form a monochromatic light image, and then combine the divided monochromatic light images of the same color to form a monochromatic light image
  • the image frame is sent to the DLP projection device 200 for display, thereby increasing the display frame rate, and at the same time, because it is adapted to a single-chip DMD system, the cost is low.
  • this embodiment further provides a video signal processing method, which can be applied to the above-mentioned video signal processing system 100 , or the projection system 10 shown in FIG. 7 , wherein the projection system 10 includes M DLP projection device 200 .
  • the video signal processing method includes the following steps:
  • Step S110 Divide each frame of the color image into M monochromatic light images.
  • M is a positive integer greater than or equal to 3, and M is 3 in this embodiment.
  • the number and color of M monochromatic light images generated by each frame of color image segmentation are the same, and the corresponding time lengths of each monochromatic light image are equal, which are the time corresponding to 1/M color images.
  • T 1 the number and color of M monochromatic light images generated by each frame of color image segmentation are the same, and the corresponding time lengths of each monochromatic light image are equal, which are the time corresponding to 1/M color images.
  • step S110 may be performed in the following manner: dividing consecutive M frames of color images into groups, and dividing each image frame in each group into a plurality of monochromatic light images. That is, firstly, group consecutive M frames of images, and then perform image segmentation according to the grouping, and combine the segmented monochrome image lights in the same group to form a monochrome image frame. This avoids compositional bias when doing image segmentation and recombination.
  • step S130 when the monochrome image frame is transmitted, it can be ensured that the output sequence of the monochrome image frame corresponds to the sequence of the video signal.
  • Step S120 Combine the segmented monochromatic light images of the same color to form at least one monochromatic image frame.
  • the combination when combining, the combination is performed according to the time sequence to form a monochrome image frame, and when combining, the combination is performed in the following manner:
  • the three monochromatic light images generated after the first frame of color image segmentation are M11, M12, and M13, respectively
  • the three monochromatic light images generated after the second frame of color image segmentation are M21, M22, and M23, respectively.
  • the three monochromatic light images generated after image segmentation are M31, M32, and M33, respectively, where M11, M21, and M31 are the same color, M12, M22, and M32 are the same color, and M13, M23, and M33 are the same color.
  • the time durations corresponding to each monochromatic light image are all the same.
  • Step S130 output the monochrome image frames to the DLP projection device 200 respectively.
  • the number of DLP projection apparatuses 200 is 3, which is the same as M, so the formed 3 monochrome image frames can be output to different DLP projection apparatuses 200, and the monochrome image frames of the same color are output according to the corresponding time sequence to the same DLP projection device 200 .
  • M can also be a positive integer greater than 3, for example, M can be equal to 4, 5, etc.
  • M can also be a positive integer greater than 3, for example, M can be equal to 4, 5, etc.
  • M can also be a positive integer greater than 3, for example, M can be equal to 4, 5, etc.
  • each frame in the color image can be divided into 4 monochromatic light images, which can include, for example, red, green, blue, and white. It can be understood that when M is 5 or a positive integer greater than 5, each frame in the color image can be divided to form M monochromatic light images, for example, can include at least one red, at least one green, at least one blue, etc. .
  • the 4 monochromatic light images generated by the segmentation of the first frame of color images are M11, M12, M13, and M14 respectively, and the 4 monochromatic light images generated by the segmentation of the second frame of color images. They are M21, M22, M23, and M24, respectively.
  • the 4 monochromatic light images generated after the third frame of color image segmentation are M31, M32, M33, and M34, respectively, and the 4 monochromatic light images generated after the fourth frame of color image segmentation are generated.
  • M41, M42, M43, and M44 respectively, among which M11, M21, M31 and M41 are the same color, M12, M22, M32 and M42 are the same color, M13, M23, M33 and M43 are the same color, M14, M24, M34 and M44 in the same color.
  • M11, M12, M13, M14 can be displayed synchronously
  • M21, M22, M23, M24 can be displayed synchronously
  • M31, M32, M33, M34 can be displayed synchronously
  • M41, M42, M43, M44 can be displayed synchronously, and the original video image signal will not be distorted.
  • the monochromatic image frame composed of M12, M22, M32 and M42 and the monochromatic image frame composed of the sequence of M13, M23, M33 and M43 can also be output to a DLP projection device at this time.
  • a DLP projection device for display At this time, only two DLP projection devices are needed to achieve synchronized display.
  • the video signal processing method provided in this embodiment can process each frame in the color image, divide each frame in the color image into monochromatic light images, and then divide the divided monochromatic light images of the same color
  • a single-color image frame is formed by combining, and is sent to the DLP projection device 200 for display, thereby increasing the display frame rate, and at the same time, the cost is low due to the adaptation to a single-chip DMD system.
  • FIG. 8 shows another implementation manner of the video signal processing system 100.
  • the video signal system 100 includes an image processing unit 110, and the image processing unit 110 is used to Each frame in the color image is divided into M monochromatic light images, and the divided monochromatic light images of the same color are combined to form at least one monochromatic image frame and at least one mixed color image frame.
  • the image processing unit 110 further Used to output monochrome image frames and mixed color image frames to the DLP projection device.
  • the monochromatic image frame contains only one color monochromatic light image
  • the mixed color image frame contains at least two color monochromatic light images.
  • each frame in the color image is divided into 3 monochromatic light images, and the 3 divided monochromatic light images are combined to form a monochromatic image frame and a mixed color image frame, mixed color image
  • the frame contains a monochromatic light image of two colors.
  • the three monochromatic light images generated after the first frame of color image segmentation are M11, M12, and M13, respectively
  • the three monochromatic light images generated after the second frame of color image segmentation are M21, M22, and M23, respectively.
  • the three monochromatic light images generated after image segmentation are M31, M32, and M33, of which M11, M21, and M31 are the same color, M12, M22, and M32 are the same color, and M13, M23, and M33 are the same color.
  • a single-color image frame composed of M11 has the same duration as a mixed-color image frame composed of M12 and M13; a single-color image frame composed of M21 corresponds to a color-mixing image frame composed of M22 and M23.
  • a single-color image frame has the same duration as a mixed-color image frame composed of M32 and M33.
  • M11, M12, and M13 can be displayed synchronously
  • the mixed color image frame formed with M13 can be displayed synchronously with the monochrome image frame formed by M11.
  • the mixed color image frame formed by M22 and M23 can be displayed synchronously with the monochrome image frame formed by M21.
  • the mixed color image frame formed by M32 and M33 can be displayed synchronously. It can be displayed in synchronization with the monochrome image frame formed by the M31.
  • the duration corresponding to each monochrome image frame is equivalent to 2/3 of each frame in the color image, so the frame rate is improved compared to the original color image. At the same time, since only two single-chip DLP devices need to be used, the production cost is reduced.
  • the color of each monochromatic light image in this embodiment is not limited, and the color of the monochromatic light image contained in the mixed color image frame is also not limited.
  • M is greater than 3
  • the number of single-color image frames and the number of mixed-color image frames can be selectively greater than 1, and the number of single-color light images included in each color-mixed image frame can also be greater than 2.
  • the video signal processing system 100 provided in this embodiment can process a color image, divide each frame in the color image to form a monochromatic light image, and then combine the divided monochromatic light images of the same color to form a single color image.
  • the color image frame and the mixed color image frame are sent to the DLP projection device 200 for display, thereby improving the display frame rate, and at the same time, the cost is low due to the adaptation to the single-chip DMD system.
  • this embodiment also provides a video signal processing method, including the following steps:
  • Step S210 Divide each frame of the color image into M monochromatic light images.
  • M is a positive integer greater than or equal to 3, and M is 3 in this embodiment.
  • Step S220 Combine the segmented monochromatic light images of the same color to form at least one monochromatic image frame and at least one mixed color image frame.
  • the combination forms a single-color image frame and a mixed-color image frame.
  • Step S230 output the monochrome image frame and the mixed-color image frame to different DLP projection apparatuses 200 respectively.
  • the video signal processing method provided in this embodiment can process each frame of a color image, divide each frame of the color image into monochromatic light images, and then divide the divided monochromatic light images of the same color into A single-color image frame is formed by combining, and is sent to the DLP projection device 200 for display, thereby increasing the display frame rate, and at the same time, the cost is low due to the adaptation to a single-chip DMD system.
  • the projection system 10 includes a video signal processing system 100 , a DLP projection apparatus 200 and a light combining element 300 .
  • the video signal processing system 100 is used to process the input video signal and output it to the DLP projection apparatus 200
  • the light combining element 300 is used to perform light combining processing on the light guided by different DLP projection apparatuses 200 .
  • each DLP projection apparatus 200 includes a controller 220 and a digital microlens 210 (DMD device).
  • the controller 220 receives a monochrome image frame output by the signal processing system, and drives the digital microlens in time series. Monochromatic image frames are displayed at 210 and directed to light combining element 300 .
  • each DLP projection apparatus 200 may further include a light source 230, which may be a laser light source, a fluorescent light source, or the like, for emitting light so that the digital microlens 210 displays.
  • the light combining element 300 receives the light of each single-color image frame guided by the DLP projection device 200 , combines the light and emits it to the subsequent optical path, and the frame rate of the combined image signal is also the second frame rate.
  • the light combining element 300 may be a wavelength combining element 300, that is, the light combining element 300 is divided into a plurality of regions by utilizing the characteristics of different wavelengths of red light, blue light and green light, and each region only selects Through the light of one color, the operation of combining light is realized.
  • the light combining element 300 may also be a polarization state light combining element 300, and the light combining element 300 is divided into a plurality of regions, and each region only selectively transmits light of one polarization state to achieve Synthetic operation.
  • the working principle of the projection system 10 provided in this embodiment is as follows:
  • the video signal processing system 100 processes the video signal, divides each frame in the color image into M monochromatic light images, and divides the divided monochromatic light images of the same color The combination is performed to form at least one single-color image frame, and each single-color image frame is output to different DLP projection apparatuses 200 respectively.
  • the number of DLP projection apparatuses 200 is less than M, monochrome image frames may also be output to the same DLP projection apparatus 200 .
  • the controller 220 drives the digital micro-lenses in sequence and guides them to the light combining element 300 .
  • each monochromatic image frame includes monochromatic light images of M frames of images in the video signal
  • the frame rate of each monochromatic image frame is M times the frame rate of the color image in the video signal, thereby achieving high Frame rate display.
  • the projection system 10 provided in this embodiment can realize the high frame rate display of video signals under the condition that only the single-chip DLP projection device 200 is used, which not only reduces the equipment cost, but also realizes the high frame rate display. During the display process, it will not cause signal distortion and so on.
  • the projection system 10 shown in FIG. 7 only includes three DLP projection apparatuses 200, it should not be regarded as a limitation of the present application. In other embodiments, the projection system 10 may further include more than three DLP projection apparatuses 200 .
  • this embodiment also provides a projection method, which can be applied to the above-mentioned projection system 10, and the projection method includes the following steps:
  • Step S310 Divide each frame in the color image into M monochromatic light images.
  • Step S320 Combine the segmented monochromatic light images of the same color to form at least one monochromatic image frame.
  • the segmented monochromatic light images of the same color may also be combined to form at least one monochromatic image frame and at least one mixed color image frame.
  • Step S330 output the monochrome image frames to the DLP projection device 200 respectively.
  • the mixed color image frame is also output to the DLP projection apparatus 200 .
  • Step S340 Photosynthetic light of the image of at least one monochrome image frame is emitted to a subsequent light path.
  • a mixed-color image frame is formed in combination, the image light of the single-color image frame and the image light of the mixed-color image frame are combined and then emitted to the subsequent optical path.
  • the projection method provided in this embodiment can realize high frame rate display under the condition that only the single-chip DLP projection device 200 is used, that is, the equipment cost is reduced, and high frame rate display can be realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Projection Apparatus (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

一种视频信号处理***、方法、投影***以及投影方法，视频信号处理***（100）包括图像处理单元（110），图像处理单元（110）用于将每一帧彩色图像分割成M个单色光图像，并将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧，且将单色图像帧输出至DLP投影装置（200）。通过将彩色图像中进行分割，形成单色光图像，再将相同颜色的单色光图像进行组合形成至少一个单色图像帧，并将单色图像帧传送至DLP投影装置（200）进行引导，最终由合光元件（300）合光后出射。由于每个单色图像帧是由多个单色光图像组合形成的，因此一个单色图像帧包括有多个同一颜色的单色光图像，相当于由多帧单色光图像形成，因此其帧率相对于原始的彩色图像得到提升。

Description

视频信号处理***、方法、投影***以及投影方法 技术领域
本申请涉及投影技术领域，具体涉及一种视频信号处理***、方法、投影***以及投影方法。
背景技术
近年来，为了应对液晶显示(LCD)技术的一些应用受限，基于数字光处理(Digital Light Processing，DLP)技术的高亮显示***得到不断发展，DLP投射显示方式的核心在于提供一个空间光调制单元，数字微透镜装置(DMD)作为一种反射式空间光调制器在投影应用领域占了非常重要的位置。与透射式的LCD相比，反射式DMD***在散热方面更具优势，因此对于发展高亮度的投影***极为有利。
在利用DMD显示时，单个微透镜的状态只有“开”和“关”两种，因此为了显示出不同灰度的图片，需要利用PWM调制的方式使其快速切换开与关状态。数字微镜在开与关之间的切换速度决定了最终可以显示出的灰度精细程度，即颜色的位深。
在一个DLP装置中，利用DMD进行投影显示主要是三片DMD的方案，即一个DLP投影***内包含三片DMD，利用一套分光合光***，对输入的白光进行分光，使每个DMD仅负责一种颜色的调制，然后再经过合光与镜头放大，最终显示在屏幕上，利用多片DMD，可以获得多倍的带宽，因此可以在不牺牲位深的前提 下显示更高帧率的图像，但三片DMD的方案成本很高，不利于推广。
发明内容
本申请的目的在于提供一种视频信号处理***、方法、投影***以及投影方法，以改善上述技术问题。
第一方面，本申请实施例提供了一种视频信号处理***，应用于投影***，视频信号处理***包括：图像处理单元，图像处理单元用于将每一帧彩色图像分割成M个单色光图像，并将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧，图像处理单元还用于将单色图像帧输出至DLP投影装置，其中，M为大于或等于3的正整数。
在一些实施方式中，投影***包括M个DLP投影装置，图像处理单元用于将不同的单色图像帧输出至不同的DLP投影装置。
在一些实施方式中，图像处理单元具体用于:将连续M帧彩色图像分割成组，对每一组中的每一帧图像帧分割成多个单色光图像，将分隔出的相同颜色的单色光图像按照图像帧顺序进行组合形成一个单色图像帧。
在一些实施方式中，每个单色光图像对应的时长相等。
在一些实施方式中，图像处理单元用于将彩色图像中的每一帧分割成M个单色光图像，并将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧以及至少一个混色图像帧，图像处理单元还用于将单色图像帧以及混色图像帧输出至DLP投影装置。
在一些实施方式中，每个单色图像帧和每个混色图像帧对应的时长相等。
第二方面，本申请实施例还提供一种视频图像处理方法，应用于投影***，投影***包括DLP投影装置，方法包括：将彩色图像中的每一帧分割成M个单色光图像，其中M为大于或等于3的正整数；将被分割出的相同颜色的单色光 图像进行组合形成至少一个单色图像帧；将单色图像帧输出至DLP投影装置。
在一些实施方式中，将连续M帧彩色图像中的每一帧分割成M个单色光图像，包括：将连续M帧彩色图像分割成组；对每一组中的每一帧图像帧分割成多个单色光图像；将分隔出的相同颜色的单色光图像按照图像顺序进行组合形成一个单色图像帧。
第三方面，本申请实施例还提供一种投影***，包括上述的视频信号处理***、DLP投影装置以及合光元件。DLP投影装置包括控制器以及一个数字微透镜，控制器接收信号处理***输出的一个单色图像帧，并时序的驱动数字微透镜，并引导至合光元件。合光元件用于将多个单色图像帧的光线合光后出射至后续光路。
第四方面，本申请实施例还提供一种投影方法，应用于上述的投影***，投影方法包括：将彩色图像中的每一帧分割成M个单色光图像；将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧；将单色图像帧输出至DLP投影装置，DLP投影装置包括控制器以及一个数字微透镜，控制器接收单色图像帧，并时序的驱动数字微透镜；以及将多个单色图像帧的光线合光后出射至后续光路。
本申请提供的视频信号处理***、方法、投影***以及投影方法，通过将彩色图像中的每一帧进行分割，形成单色光图像，再将被分割的相同颜色的单色光图像进行组合形成至少一个单色图像帧，并将单色图像帧传送至DLP投影装置进行引导，最终由合光元件合光后出射。由于每个单色图像帧是由多个单色光图像组合形成的，因此一个单色图像帧包括有多个同一颜色的单色光图像，相当于由多帧单色光图像形成，因此其帧率相对于原始的彩色图像得到提升。
本申请的这些方面或其他方面在以下实施例的描述中会更加简明易懂。
附图说明
为了更清楚地说明本申请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申请的一些实施例，对于本领域技术人员来讲，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是本申请示出的一种投影***的结构示意图；
图2是图1中示出的投影***在进行显示时的流程示意图；
图3是本申请示出的另一种投影***的结构示意图；
图4是第一实施例中提供的一种视频信号处理***的结构框图；
图5是第一实施例中提供的视频信号处理方法的流程图；
图6是第一实施例中提供的视频信号处理方法中进行图像分割的流程示意图；
图7是第一实施例中提供的视频信号处理方法中另一种进行图像分割的流程示意图；
图8是第二实施例中提供的视频信号处理***进行图像分割的流程示意图；
图9是第二实施例中提供的视频信号处理方法的流程图；
图10是本申请第三实施例提供的一种投影***的结构示意图；
图11是本申请第三实施例提供的一种DLP投影装置的结构框图；
图12是第三实施例中提供的一种投影方法的流程图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请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申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
参阅图1，在一些投影***1a中，包括一个DLP投影装置3，DLP投影装置3包括一个DMD装置4，信号源经图像处理单元2进行处理后，由同一个DLP投影装置3按照时序进行显示，并投射向屏幕5。参阅图2，每一帧图像在进行显示时，是按照预设的时序进行显示的。例如：在一帧图像的周期T中，包含红色、蓝色、绿色三种颜色的图像光，显示时，在第一个1/3周期，显示红色图像光，在第二个1/3周期，显示绿色图像光，在最后一个1/3周期，显示蓝色图像光。当然，其显示顺序是可以根据需要进行调整的。
这种投影***1a，在显示时需要利用人眼的视觉暂留效应，将一帧的持续时间段拆分成三份或多份，并分配以不同颜色分时显示。而为了显示确定比特数的彩色图像，需要保证镜片翻转速度足够快，以提供足够大的带宽。例如对于单DLP***而言，其翻转速度可以保证以8bit的位深达到120Hz的帧率。然而想要在此基础上提高图像的帧率，就需要牺牲一部分位深。
如图3所示，在一些方式中，投影装置1b包括多片式DMD装置，图像处理单元2将图像信号处理后，按照三基色光分别发送至同一DLP投影装置3的多个DMD装置4进行引导，并在合光后投射向屏幕5。这种方式的缺陷在于包含多片式DMD装置4的DLP投影装置3价格昂贵，成本极高。
因此，本申请的发明人提出了一种视频信号处理***、方法、投影***以及投影方法，其可以在不改变位深的情况下，提高图像显示帧率。下面将结合附图具体描述本申请的各实施例。
第一实施例
参阅图4，本实施例提供一种视频信号处理***100，其可以应用于如图7所示的投影***10中，其中投影***10包括M个DLP投影装置200，每个DLP投影装置200包括一个单片式DMD装置。具体的，视频信号处理***100包括图像处理单元110。
图像处理单元110用于将彩色图像中的每一帧分割成M个单色光图像，并将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧，其中M为大于或等于3的正整数。其中彩色图像并不特指视频信号图像是彩色的，而是指该视频信号图像由多个基色图像组成，彩色图像的帧率为第一帧率。
在一些实施方式中，彩色图像中的每一帧分割成的M个单色光图像可以全部按照不同颜色进行组合，形成M个单色图像帧。在一些实施方式中，也可以是部分单色光图像形成单色图像帧，其余单色光图像形成混色图像帧。
每一帧彩色图像均可以被拆分成M个单色光图像，每一个单色光图像对应的时长是相等的。并且作为一种示例，每帧彩色图像被拆分成的M个单色光图像的颜色是相互对应的。例如：第一帧彩色图像被拆分成红、绿、蓝三种颜色的单色光图像，相应的，第二帧、第三帧彩色图像也均被拆分成红、绿、蓝三种颜色的单色光图像。
仅作为一种示例，本实施例中，M等于3，并且每一帧彩色图像被拆分成红、绿、蓝三基色的单色光图像。这样设置的好处在于，由于通常光源采用三基色光源，因此拆分成三基色的单色光图像在实施时也更为方便。
同时，本实施例中，图像处理单元110将相同颜色的单色光图像组合全部形成单色图像帧，其中每个单色光图像对应的时长为一帧彩色图像对应的时长的1/M，在显示过程中，相同颜色的单色光图像进行组合形成的单色图像帧中，包括一个或多个单色光图像，一个单色光图像实际上形成一帧画面，因此其帧率 也未原始的彩色图像的1/M。
在一些实施方式中，图像处理单元用于将彩色图像中的连续M帧进行分割，每一帧分割形成M个单色图像光，即形成M*M个单色图像光，每个单色图像帧中包括由M个连续图像帧拆分出来的单色光图像。因此，相当于在一个单色图像帧周期T内，组合有原来的M帧图像的单色光图像，因此该图像帧的等效周期是(1/M)T，即单色图像帧的帧率为第二帧率，第二帧率是第一帧率的M倍，也即是帧率是如图1所示的单DMD***的M倍。
图像处理单元110还用于将单色图像帧输出至DLP投影装置200，在本实施例中，一个投影***10包括M个DLP投影装置200，图像处理单元110可以将组合形成的M个单色图像帧分别输出至不同的投影装置200，此处不同的DLP投影装置200是指投影***10中的M个DLP投影装置200。即将每个红色图像光组合形成的单色图像帧发送至一个DLP投影装置200，将每个蓝色图像光组合形成的单色图像帧发送至一个DLP投影装置200，将每个绿色图像光组合形成的单色图像帧发送至一个DLP投影装置200。
在其他的一些实施方式中，一个投影***10也可以仅包括一个投影装置200，此时，图像处理单元110在将M个单色图像帧输出至投影装置200时，可以按照预设的时序将M个单色图像帧依时序输出至投影装置200，投影装置200按照时序驱动显示M个单色图像帧，由于视觉暂留效应，用户仍能观看到正常的图像。
在其他的一些实施方式中，一个投影***也10可以包括多于1个且少于M个的投影装置200，此时，图像处理单元110在将M个单色图像帧输出至投影装置200时，可以按照预设的时序将M个单色图像帧按照平均分配的方式发送至不同的投影装置200，使得每个投影装置200的显示时长相等。
图像处理单元110可以由一个或多个的处理器(processor)构成，每个处理器可以包括一个或者多个处理核。处理器可以采用数字信号处理(Digital Signal Processing，DSP)、现场可编程门阵列(Field－Programmable Gate Array，FPGA)、可编程逻辑阵列(Programmable Logic Array，PLA)中的至少一种硬件形式来实现。处理器可集成中央处理器(Central Processing Unit，CPU)、图像处理器(Graphics Processing Unit，GPU)和调制解调器等中的一种或几种的组合。
本实施例提供的视频信号处理***100可以将彩色图像进行处理，将彩色图像中的每一帧进行分割形成单色光图像，再将被分割的相同颜色的单色光图像进行组合形成单色图像帧，并发送至DLP投影装置200进行显示，进而可以提高显示帧率，同时由于适配单片式的DMD***，因此成本低廉。
参阅图5，本实施例还提供一种视频信号处理方法，其可以应用于上述的视频信号处理***100，或者应用于如图7所示的投影***10，其中，投影***10包括有M个DLP投影装置200。
具体的，视频信号处理方法包括以下步骤：
步骤S110：将彩色图像中的每一帧彩色图像分割成M个单色光图像。其中M为大于或等于3的正整数，本实施例中M为3。
其中，每一帧彩色图像分割产生的M个单色光图像的数量以及颜色均是相同的，且每一个单色光图像对应的时长是相等的，均为1/M的彩色图像对应的时间T 1。
在一些实施方式中，步骤S110可以按照以下方式进行：将连续M帧彩色图像分割成组，对每一组中的每一帧图像帧分割成多个单色光图像。即先对连续的M帧图像进行分组，然后按照分组进行图像分割，在同一组内对分割出的单色图 像光进行组合形成单色图像帧。这样可以避免在进行图像分割和重新组合时出现组合偏差。同时，在后续步骤S130中，输送单色图像帧时，可以确保单色图像帧的输出顺序与视频信号的时序是对应的。
步骤S120：将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧。
参阅图6，在进行组合时，按照时序进行组合形成单色图像帧，在进行组合时，按以下方式进行组合：
第一帧彩色图像分割后产生的3个单色光图像分别为M11、M12、M13，第二帧彩色图像分割后产生的3个单色光图像分别为M21、M22、M23，第三帧彩色图像分割后产生的3个单色光图像分别为M31、M32、M33，其中M11、M21以及M31为相同颜色，M12、M22以及M32为相同颜色，M13、M23以及M33为相同颜色，上述的每个单色光图像对应的时长均相等。
在进行组合时，按照M11、M21以及M31的顺序组合成一个单色图像帧，按照M12、M22以及M32的顺序组合成一个单色图像帧，按照M13、M23以及M33的顺序组合成一个单色图像帧。这样当三个单色图像帧被发送至DLP投影装置200且被显示时，M11、M12、M13可以被同步显示，M21、M22、M23可以被同步显示，M31、M32、M33是可以被同步显示，原有的视频图像信号不会失真。
步骤S130：将单色图像帧分别输出至DLP投影装置200。
本实施例中，DLP投影装置200的数量为3个，与M相同，因此形成的3个单色图像帧可以输出至不同的DLP投影装置200，同一颜色的单色图像帧按照时序对应的输出至同一个DLP投影装置200。
可以理解的是，在其他的一些实施方式中，当DLP投影装置的数量不为3个，例如DLP投影装置的数量为1个时，3个单色图像帧可以输出至一个DLP投 影装置200，并按照预设的时序驱动显示。
作为另一种实施方式，M也可以是大于3的正整数，例如M可以等于4、5等，以下以M为4作为示例进行介绍：
参阅图7，当M等于4时，彩色图像中的每一帧可以分割形成4个单色光图像，例如可以包括红色、绿色、蓝色以及白色等。可以理解的是，当M为5或者大于5的正整数时，彩色图像中的每一帧可以分割形成M个单色光图像，例如可以包括至少一个红色、至少一个绿色、至少一个蓝色等。
将连续的4帧彩色图像进行分割，第一帧彩色图像分割后产生的4个单色光图像分别为M11、M12、M13、M14，第二帧彩色图像分割后产生的4个单色光图像分别为M21、M22、M23、M24，第三帧彩色图像分割后产生的4个单色光图像分别为M31、M32、M33、M34，第四帧彩色图像分割后产生的4个单色光图像分别为M41、M42、M43、M44，，其中M11、M21、M31以及M41为相同颜色，M12、M22、M32以及M42为相同颜色，M13、M23、M33以及M43为相同颜色，M14、M24、M34以及M44为相同颜色。
在进行组合时，可以按照如下的方式进行：按照M11、M21、M31以及M41的顺序组合成一个单色图像帧，M12、M22、M32以及M42的顺序组合成一个单色图像帧，M13、M23、M33以及M43的顺序组合成一个单色图像帧，M14、M24、M34以及M44的顺序组合成一个单色图像帧。当四个单色图像帧被发送至DLP投影装置200且被显示时，特别的被分别发送至不同的DLP投影装置是，M11、M12、M13、M14可以被同步显示，M21、M22、M23、M24可以被同步显示，M31、M32、M33、M34可以被同步显示，M41、M42、M43、M44可以被同步显示，原有的视频图像信号不会失真。
在一些实施方式中，此时也可以将M12、M22、M32以及M42组合成的单色图 像帧，与由M13、M23、M33以及M43的顺序组合成的单色图像帧输出至一个DLP投影装置进行，将M13、M23、M33以及M43的组合成的单色图像帧，以及由M14、M24、M34以及M44组合成的单色图像帧发送至一个DLP投影装置显示。此时只需要两个DLP投影装置就可以实现同步的显示。
本实施例提供的视频信号处理方法，可以将彩色图像中的每一帧进行处理，将彩色图像中的每一帧进行分割成单色光图像，再将被分割的相同颜色的单色光图像进行组合形成单色图像帧，并发送至DLP投影装置200进行显示，进而可以提高显示帧率，同时由于适配单片式的DMD***，因此成本低廉。
第二实施例
在一个实施例中，请一并参阅图4和图8，图8示出了视频信号处理***100的另一种实施方式，视频信号***100包括图像处理单元110，图像处理单元110用于将彩色图像中的每一帧分割成M个单色光图像，并将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧以及至少一个混色图像帧，图像处理单元110还用于将单色图像帧以及混色图像帧输出至DLP投影装置。
其中，单色图像帧中只包含一种颜色的单色光图像，混色图像帧中包含至少两种颜色的单色光图像。本实施例中，以M为3为例，彩色图像中的每一帧分割成3个单色光图像，并将分割出的3个单色光图像组合形成一个单色图像帧以及一个混色图像帧，混色图像帧中包含两种颜色的单色光图像。
请继续参阅图8，具体的，在进行组合时，按照时序进行组合形成单色图像帧以及混色图像帧，在进行组合时，按以下方式进行组合：
第一帧彩色图像分割后产生的3个单色光图像分别为M11、M12、M13，第二帧彩色图像分割后产生的3个单色光图像分别为M21、M22、M23，第三帧彩色图 像分割后产生的3个单色光图像分别为M31、M32、M33，其中M11、M21以及M31为相同颜色，M12、M22以及M32为相同颜色，M13、M23以及M33为相同颜色。
在进行组合时，按照M11、M21以及M31的顺序组合成三个单色图像帧，按照M12与M13、M22与M23以及M32与M33的顺序依次组合成三个混色图像帧，且每个单色图像帧对应的时长与每个混色图像帧对应的时长相等。即M11组成的一个单色图像帧与M12与M13组成的一个混色图像帧对应的时长相等；M21组成的一个单色图像帧与M22与M23组成的一个混色图像帧对应的时长相等；M31组成的一个单色图像帧与M32与M33组成的一个混色图像帧对应的时长相等。
这样当三个单色图像帧被发送至一个DLP投影装置200且被显示时，M11、M12、M13可以被同步显示，三个混色图像帧被发送至一个DLP投影装置200且被显示时，M12和M13形成的混色图像帧可以与M11构成的单色图像帧同步显示，同样的，M22和M23形成的混色图像帧可以与M21构成的单色图像帧同步显示，M32和M33形成的混色图像帧可以与M31构成的单色图像帧同步显示。
每一个单色图像帧对应的时长相当于彩色图像中的每一帧的2/3,因此相比于原始的彩色图像，帧率得到提高。同时，由于只需要使用2个单片式的DLP装置，降低了生产成本。
需要说明的是，本实施例中的各个单色光图像的颜色并不做限定，混色图像帧中包含何种颜色的单色光图像也不做限定。当M大于3时，单色图像帧的数量以及混色图像帧的数量均可以选择性的大于1，且每个混色图像帧中包含的单色光图像的数量也可以大于2。
本实施例提供的视频信号处理***100，可以将彩色图像进行处理，将彩色图像中的每一帧进行分割形成单色光图像，再将被分割的相同颜色的单色光图像进行组合形成单色图像帧以及混色图像帧，并发送至DLP投影装置200进行 显示，进而可以提高显示帧率，同时由于适配单片式的DMD***，因此成本低廉。
参阅图9，本实施例还提供一种视频信号处理方法，包括以下步骤：
步骤S210：将彩色图像中的每一帧彩色图像分割成M个单色光图像。其中M为大于或等于3的正整数，本实施例中M为3。
步骤S220：将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧以及至少一个混色图像帧。本实施例中，组合形成一个单色图像帧以及一个混色图像帧。
步骤S230：将单色图像帧以及混色图像帧分别输出至不同的DLP投影装置200。
具体的各个步骤的执行方式，可以参阅前述内容。本实施例提供的视频信号处理方法，可以将彩色图像的每一帧进行处理，将彩色图像中的每一帧进行分割成单色光图像，再将被分割的相同颜色的单色光图像进行组合形成单色图像帧，并发送至DLP投影装置200进行显示，进而可以提高显示帧率，同时由于适配单片式的DMD***，因此成本低廉。
第三实施例
参阅图10，本实施例提供一种投影***10，投影***10包括视频信号处理***100、DLP投影装置200以及合光元件300。视频信号处理***100用于对输入的视频信号进行处理，并输出至DLP投影装置200，合光元件300用于对由不同的DLP投影装置200引导的光线进行合光处理。
其中，视频信号处理***100的结构、功能或实施方式可以参阅第一实施例的相关内容，在此不再赘述。
本实施例中，DLP投影装置200的数量为M个，每个DLP投影装置200为单 片式DLP投影装置200。具体的，参阅图11，每个DLP投影装置200包括控制器220以及一个数字微透镜210(DMD装置)，控制器220接收信号处理***输出的一个单色图像帧，并时序的驱动数字微透镜210显示单色图像帧，并引导至合光元件300。需要指出的是，每个DLP投影装置200还可以包括光源230，光源230可以是激光光源、荧光光源等，用于出射光线以使得数字微透镜210进行显示。
合光元件300接收每个DLP投影装置200引导的单色图像帧的光线，并合光后出射至后续光路，合光后的图像信号的帧率同样为第二帧率。在一些实施方式中，合光元件300可以是波长合光元件300，即利用红光、蓝光以及绿光的波长不等的特性，将合光元件300分隔成多个区域，每个区域仅选择性的透过一种颜色的光线，实现合光操作。在其他的一些实施方式中，合光元件300也可以是偏振状态合光元件300，将合光元件300分隔成多个区域，每个区域仅选择性的透过一种偏振状态的光线，实现合光操作。
本实施例提供的投影***10的工作原理如下：
当视频信号输入至视频处理***，视频信号处理***100对视频信号进行处理，将彩色图像中的每一帧分割成M个单色光图像，并将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧，并将每个单色图像帧分别输出至不同的DLP投影装置200。当DLP投影装置200的数量少于M个时，也可以将单色图像帧输出至相同的DLP投影装置200。
DLP投影装置200接收单色图像帧后，控制器220时序的驱动数字微透镜，并引导至合光元件300，合光元件300将多个单色图像帧的光线合光后出射至后续光路。
由于每个单色图像帧中包括视频信号中的M帧图像的单色光图像，因此每 个单色图像帧的帧率是视频信号中的彩色图像的帧率的M倍，进而实现了高帧率显示。
本实施例提供的投影***10，可以实现只使用单片式DLP投影装置200的情况下，实现视频信号的高帧率显示，即降低了设备成本，又能实现高帧率显示，且在投影显示过程中，不会造成信号失真等情形。
需要说明的是，尽管图7中示出的投影***10中仅包括三个DLP投影装置200，其不应视为对本申请的限定。在其他的一些实施方式中，投影***10还可以包括三个以上的DLP投影装置200。
参阅图12，本实施例还提供一种投影方法，其可以应用于上述的投影***10，投影方法包括以下步骤：
步骤S310：将彩色图像中的每一帧分割成M个单色光图像。
步骤S320：将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧。
在一些实施方式中，步骤S220中，也可以将分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧以及至少一个混色图像帧。
步骤S330：将单色图像帧分别输出至DLP投影装置200。当组合形成有混色图像帧时，将混色图像帧也输出至DLP投影装置200。
步骤S340：将至少一个单色图像帧的图像光合光后出射至后续光路。当组合形成有混色图像帧时，将单色图像帧的图像光与混色图像帧的图像光合光后出射至后续光路。
可以理解的是，上述的投影方法的具体实施方式均可以参阅前述任一实施例的内容，在此不再赘述。
本实施例提供的投影方法，可以实现只使用单片式DLP投影装置200的情 况下，实现高帧率显示，即降低了设备成本，又能实现高帧率显示。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种视频信号处理***，其特征在于，应用于投影***，所述投影***包括DLP投影装置，所述视频信号处理***包括：
    图像处理单元，所述图像处理单元用于将彩色图像中的每一帧分割成M个单色光图像，并将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧，所述图像处理单元还用于将所述单色图像帧输出至DLP投影装置，其中，M为大于或等于3的正整数。
  2. 根据权利要求1所述的视频信号处理***，其特征在于，所述投影***包括M个DLP投影装置，所述图像处理单元用于将不同的所述单色图像帧输出至不同的DLP投影装置。
  3. 根据权利要求2所述的视频信号处理***，其特征在于，所述图像处理单元具体用于:
    将连续M帧彩色图像分割成组，对每一组中的每一帧图像帧分割成多个单色光图像，将分隔出的相同颜色的单色光图像按照图像帧顺序进行组合形成一个单色图像帧。
  4. 根据权利要求2所述的视频信号处理***，其特征在于，每个所述单色光图像对应的时长相等。
  5. 根据权利要求1所述的视频信号处理***，其特征在于，所述图像处理单元用于将彩色图像中的每一帧分割成M个单色光图像，并将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧以及至少一个混色图像帧，所述图像处理单元还用于将所述单色图像帧以及所述混色图像帧输出至DLP投影装置。
  6. 根据权利要求5所述的视频信号处理***，其特征在于，每个所述单色 图像帧和每个混色图像帧对应的时长相等。
  7. 一种视频信号处理方法，其特征在于，应用于投影***，所述投影***包括DLP投影装置，所述方法包括：
    将彩色图像中的每一帧分割成M个单色光图像，其中M为大于或等于3的正整数；
    将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧；
    将所述单色图像帧输出至DLP投影装置。
  8. 根据权利要求7所述的方法，其特征在于，所述将彩色图像中的每一帧分割成M个单色光图像，包括：
    将连续M帧彩色图像分割成组；
    对每一组中的每一帧图像帧分割成多个单色光图像。
  9. 一种投影***，其特征在于，包括：
    如权利要求1-6任一项所述的视频信号处理***；
    DLP投影装置，所述DLP投影装置包括控制器以及一个数字微透镜，所述控制器接收所述信号处理***输出的所述单色图像帧，并时序的驱动所述数字微透镜，并引导至所述合光元件；以及
    合光元件，所述合光元件用于将多个所述单色图像帧的光线合光后出射至后续光路。
  10. 一种投影方法，其特征在于，应用于如权利要求9所述的投影***，包括：
    将彩色图像中的每一帧分割成M个单色光图像；
    将被分割出的相同颜色的单色光图像进行组合形成至少一个单色图像帧；
    将所述单色图像帧输出至DLP投影装置，所述DLP投影装置包括控制器以 及一个数字微透镜，所述控制器接收所述单色图像帧，并时序的驱动所述数字微透镜；以及
    将至少一个所述单色图像帧的图像光合光后出射至后续光路。
PCT/CN2021/103961 2020-07-03 2021-07-01 视频信号处理***、方法、投影***以及投影方法 WO2022002190A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010637113.8A CN113888565A (zh) 2020-07-03 2020-07-03 视频信号处理***、方法、投影***以及投影方法
CN202010637113.8 2020-07-03

Publications (1)

Publication Number Publication Date
WO2022002190A1 true WO2022002190A1 (zh) 2022-01-06

Family

ID=79011933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/103961 WO2022002190A1 (zh) 2020-07-03 2021-07-01 视频信号处理***、方法、投影***以及投影方法

Country Status (2)

Country Link
CN (1) CN113888565A (zh)
WO (1) WO2022002190A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008032589A1 (en) * 2006-09-11 2008-03-20 Olympus Corporation Imaging device, image processing device, imaging system, and image processing program
CN101932973A (zh) * 2007-12-31 2010-12-29 康宁股份有限公司 用于光信号的偏振调制的***和方法
CN103543587A (zh) * 2012-07-16 2014-01-29 耿征 光处理装置、高帧频彩色显示成像装置和光处理方法
CN108074512A (zh) * 2016-11-18 2018-05-25 中兴通讯股份有限公司 投影方法及装置
CN111108546A (zh) * 2017-09-29 2020-05-05 索尼公司 显示设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008032589A1 (en) * 2006-09-11 2008-03-20 Olympus Corporation Imaging device, image processing device, imaging system, and image processing program
CN101932973A (zh) * 2007-12-31 2010-12-29 康宁股份有限公司 用于光信号的偏振调制的***和方法
CN103543587A (zh) * 2012-07-16 2014-01-29 耿征 光处理装置、高帧频彩色显示成像装置和光处理方法
CN108074512A (zh) * 2016-11-18 2018-05-25 中兴通讯股份有限公司 投影方法及装置
CN111108546A (zh) * 2017-09-29 2020-05-05 索尼公司 显示设备

Also Published As

Publication number Publication date
CN113888565A (zh) 2022-01-04

Similar Documents

Publication Publication Date Title
US8641205B2 (en) Light source device having first light source, second light source, and control section to control drive timing of first light source and second light source such that drive pattern of second light source is inversion of drive pattern of first light source, and projection apparatus and projection method which utilize said light source device
US20050007563A1 (en) Method of driving a spatial light modulator and projector
JP3174810U (ja) レーザ光学エンジン
US20050243282A1 (en) Method and apparatus for sequencing light emitting devices in projection systems
JP2017514178A (ja) 光源システム及び投影表示装置
US10281805B2 (en) Image display device and image display method
WO2020221083A1 (zh) 图像拆分方法与图像显示方法
US20170264889A1 (en) Stereoscopic image projection device and stereoscopic display glasses
US20180192013A1 (en) Image display device and image display method
CN107357124B (zh) 多基色双dmd激光投影显示装置
TWI744829B (zh) 照明系統、照明控制方法以及投影裝置
US7812300B2 (en) Methods and systems for imaging having an illumination splitting means with a dynamic selecting means and a static selecting means
WO2020057296A1 (zh) 显示设备、显示设备的控制方法及计算机可读存储介质
WO2024088090A1 (zh) 投影设备及其投影图像的显示方法
US10965918B2 (en) Projection system and image modulation method
WO2022002190A1 (zh) 视频信号处理***、方法、投影***以及投影方法
CN109212756A (zh) 一种基于Micro LED实现AR直接投射显示的方法
JP2002333597A (ja) 投影装置
CN111131802A (zh) 一种dlp投影仪及动态颜色管理***
US20220224869A1 (en) Projection display device
CN107589618A (zh) 高刷新率的微型投影***及提高微显示器刷新率的方法
CN210109545U (zh) 自发光投影显示***及微显示全彩光机
JP2005292502A (ja) 投写型ディスプレイの照明装置、及び投写型プロジェクタ
TWI302633B (en) Projecting system with a color-adjusting mechanism and mehod for adjusting color for the same
JP6508277B2 (ja) プロジェクター

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21833663

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21833663

Country of ref document: EP

Kind code of ref document: A1