WO2015165231A1 - 穿戴式投影装置及投影方法 - Google Patents

穿戴式投影装置及投影方法 Download PDF

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Publication number
WO2015165231A1
WO2015165231A1 PCT/CN2014/090022 CN2014090022W WO2015165231A1 WO 2015165231 A1 WO2015165231 A1 WO 2015165231A1 CN 2014090022 W CN2014090022 W CN 2014090022W WO 2015165231 A1 WO2015165231 A1 WO 2015165231A1
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Prior art keywords
palm
information
brightness
color
area
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PCT/CN2014/090022
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English (en)
French (fr)
Inventor
陈炎顺
赵星星
许秋实
李耀辉
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京东方科技集团股份有限公司
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Priority to EP14851430.0A priority Critical patent/EP3139598B1/en
Priority to KR1020157012704A priority patent/KR101621201B1/ko
Priority to JP2017508726A priority patent/JP6808612B2/ja
Priority to US14/436,405 priority patent/US9699425B2/en
Publication of WO2015165231A1 publication Critical patent/WO2015165231A1/zh

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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
    • H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3141—Constructional details thereof
    • H04N9/3173—Constructional details thereof wherein the projection device is specially adapted for enhanced portability
    • 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
    • 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
    • H04N9/3188—Scale or resolution adjustment
    • 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]
    • H04N9/3191—Testing thereof
    • H04N9/3194—Testing thereof including sensor feedback
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/206—Control of light source other than position or intensity
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/567—Projection screens for colour projection

Definitions

  • Embodiments of the present invention relate to a wearable projection device and a projection method.
  • a wearable projection device is a screen with a palm as a projection.
  • the difference between the shape of the palm of the user, the palm print of the palm, the color of the palm, and the like is large, and, as shown in FIG. 1 , the light and the palm of the wearable projection device 02 are emitted by the wearable projection device 02 when projected.
  • the projection angle between 01 is small, and the angle between the closest point and the farthest point of the light emitted by the wearable projection device 02 is large, and the wearable projection device 02 emits light when the image is displayed on the palm 01, and is located at the center.
  • the widths L1 and L2 of the portions on both sides of the line are different, resulting in a color uniformity of the image formed on the palm of the hand and a poor uniformity of brightness.
  • Embodiments of the present invention provide a wearable projection apparatus and a projection method.
  • the projection type projection apparatus uses the projection method, the color of the image formed on the palm and the uniformity of the brightness are high.
  • an embodiment of the present invention provides a projection method of a wearable projection device, comprising: acquiring color distribution information and brightness distribution information of each area of a palm; and obtaining color distribution information according to acquired regions of the palm and a set standard color. Determining the corrected color output parameter, determining the corrected brightness output parameter according to the obtained brightness distribution information of each area of the palm; determining the pattern output parameter according to the determined color output parameter and the determined brightness output parameter; and determining the image according to the determined image The output parameters control the output image of the projection module.
  • the obtaining color distribution information and brightness distribution information of each area of the palm includes: acquiring RGB pattern information of each area of the palm; determining color distribution information and brightness distribution of each area of the palm according to the acquired RGB pattern information of each area of the palm information.
  • the determining the corrected color output parameter according to the acquired color distribution information of each area of the palm and the set standard color information comprises: according to the color of each area of the acquired palm The cloth information determines a reference color value, and determines the corrected color output parameter based on the determined reference color value, the set standard color information, and the determined color information of each area of the palm.
  • the reference color value is an average of the color information of the central region of the palm.
  • the determining the corrected color output parameter according to the determined reference color value, the set standard color information, and the determined color information of each area of the palm may be calculated according to the following formula:
  • U'(x, y) is the corrected red tone output parameter
  • V'(x, y) is the corrected blue tone output parameter
  • U(x, y) is the determined color distribution of different regions of the palm.
  • the red tone information in the information, V(x, y) is the blue tone information in the determined color distribution information of different areas of the palm
  • U s is the red tone information in the set standard color information
  • U 0 is determined
  • V s is the blue tone information in the set standard color information
  • V 0 is the blue tone value in the determined reference color value.
  • determining the corrected brightness output parameter according to the obtained brightness distribution information of each area of the palm comprises: determining a brightness correction factor of each area of the palm according to the obtained brightness information distribution information of each area of the palm, and according to each area The brightness correction factor and the determined brightness distribution information of each region of the palm determine the corrected brightness output parameter.
  • the determining the corrected brightness output parameter according to the brightness correction factor of each area and the determined brightness distribution information of each area of the palm may be calculated according to the following formula:
  • Y'(x, y) is the corrected brightness output parameter
  • Y(x, y) is the brightness information of each area of the palm
  • Hand(x, y) is the brightness correction factor
  • Y(max) is the area of the palm. The brightness value of the highest brightness value in the brightness information.
  • the determining the corrected brightness output parameter according to the brightness correction factor of each area and the determined brightness distribution information of each area of the palm may be calculated according to the following formula:
  • Y' is the corrected brightness output parameter and Y is the brightness information of each area of the palm.
  • h is the distance from the center of the exit surface of the projection device to the palm of the hand.
  • the angle of the exit light of the light-emitting surface of the projection device, ⁇ 0 is the angle between the center line of the exit light angle of the light-emitting surface of the projection device and the palm, and L is the projection device projecting away from the end of the projection device in the palm projection region.
  • N is the total number of pixels of the projection device in the palm projection area from the end of the projection device to the end of the projection device
  • i is the projection device in the palm projection region from the end of the projection device toward the end of the projection device The number of rows in which the pixel is located.
  • an embodiment of the present invention further provides a wearable projection device, comprising: an acquisition device for collecting pattern information of each area of the palm; and a processing unit coupled to the collection device for signaling
  • the pattern information of each area of the palm collected by the collecting device acquires color distribution information and brightness distribution information of each area of the palm, and determines the corrected color output parameter according to the obtained color distribution information of each area of the palm and the set standard color information, according to The obtained brightness distribution information of each area of the palm determines the corrected brightness output parameter; and the projection module is configured to control the output image of the projection module according to the determined color output parameter and the determined brightness output parameter.
  • the acquiring device is an RGB camera, and the lighting direction is parallel to the light emitting direction of the projection module.
  • Figure 1 is a schematic view of a wearable projection device projected on a palm
  • FIG. 2 is another schematic diagram of a wearable projection device projected on a palm.
  • Embodiments of the present invention provide a projection method of a wearable projection device, the projection method comprising:
  • Step S201 acquiring color distribution information and brightness distribution information of each area of the palm;
  • Step S202 determining the corrected color output parameter according to the obtained color distribution information of each area of the palm and the set standard color information, and determining the corrected brightness output parameter according to the obtained brightness distribution information of each area of the palm;
  • Step S203 Control the projection module output image according to the determined color output parameter and the determined brightness output parameter.
  • the set standard color information is a display standard of the display system, for example, the ordinary PC system is the sRGB standard, and the TV system is the NTSC standard.
  • the color distribution information and the luminance distribution information of each region of the palm are first acquired in step S201, and then the corrected color output parameter is determined according to the acquired color distribution information in step S202. And determining the corrected brightness output parameter according to the acquired brightness distribution information, and finally controlling the projection module output image of the wearable projection device according to the determined color output parameter and the determined brightness output parameter by step S203.
  • the influence of the palm color on the projected image of the wearable projection device on the palm is corrected, so that the color of the image and the uniformity of brightness of the wearable projection device are projected on the palm of the hand. Higher.
  • step S201 the color distribution information and the brightness distribution information of each area of the palm are obtained, including:
  • the color distribution information and the brightness distribution information of each area of the palm are determined according to the acquired RGB pattern information of each area of the palm.
  • the acquired RGB pattern information is converted into information in the YUV format, thereby determining color distribution information and brightness distribution information of each area of the palm.
  • step S202 determining the corrected color output parameters according to the acquired color distribution information of each area of the palm and the set standard color information, including:
  • the reference color value is an average of the color information of the central region of the palm.
  • determining the corrected color output parameter according to the determined reference color value, the set standard color information, and the determined color information of each area of the palm may be calculated according to the following formula:
  • U'(x, y) is the corrected red tone output parameter
  • V'(x, y) is the corrected blue tone output parameter
  • U(x, y) is the determined color distribution of different regions of the palm.
  • U s is the standard shades of red color information setting information in
  • U 0 is determined
  • V s is the blue tonal information in the set standard color information
  • V 0 is the blue tonal value in the determined reference color value
  • x and y are the coordinates of a point on the palm .
  • determining the corrected brightness output parameter according to the acquired brightness distribution information of each area of the palm includes:
  • the brightness correction factor of each area of the palm is determined according to the obtained brightness information distribution information of each area of the palm, and the corrected brightness output parameter is determined according to the brightness correction factor of each area and the determined brightness distribution information of each area of the palm.
  • determining the corrected brightness output parameter according to the brightness correction factor of each area and the determined brightness distribution information of each area of the palm may be calculated according to the following formula:
  • Y'(x, y) is the corrected brightness output parameter
  • Y(x, y) is the brightness information of each area of the palm
  • Hand(x, y) is the brightness correction factor
  • Y(max) is the area of the palm.
  • the brightness value of the brightness in the brightness information, x and y are the coordinates of a point on the palm.
  • determining the corrected brightness output parameter according to the brightness correction factor of each area and the determined brightness distribution information of each area of the palm may also be calculated according to the following formula:
  • Y' is the corrected brightness output parameter and Y is the brightness information of each area of the palm.
  • h is the distance from the center of the light exit surface of the projection device 2 to the palm 1
  • the angle of the outgoing light of the light-emitting surface of the projection device 2 ⁇ 0 is the angle between the center line of the angle of the outgoing light of the light-emitting surface of the projection device 2 and the palm 1
  • L is the projection device 2 approaching the projection area of the palm 1
  • One end of the projection device 2 is away from the end of the projection device 2
  • N is the total number of pixels of the projection device 2 in the projection area of the palm 1 from the end of the projection device 2 toward the end of the projection device 2
  • i is the projection device 2
  • the projection area of the palm 1 is the number of lines in which the pixel is located from the end of the projection device 2 toward the end of the projection device 2.
  • the embodiment of the invention further provides a wearable projection device, comprising:
  • a collecting device for collecting pattern information of each area of the palm
  • the processing unit is connected to the signal of the collecting device, and is configured to obtain color distribution information and brightness distribution information of each area of the palm according to the pattern information of each area of the palm collected by the collecting device, and according to the obtained color distribution information of each area of the palm and the set
  • the standard color information determines the corrected color output parameter, and the corrected brightness output parameter is determined according to the obtained brightness distribution information of each area of the palm;
  • a projection module configured to control the output image of the projection module according to the determined color output parameter and the determined brightness output parameter.
  • the above collecting device is an RGB camera, and the lighting direction is parallel to the light emitting direction of the projection module.
  • the output image of the projection module of the wearable projection device is controlled according to the corrected color output parameter and the corrected brightness output parameter, thereby the palm color
  • the influence of the projection image of the wearable projection device on the palm is corrected, and the projection image on the palm is corrected by the reflectivity and the projection angle of different positions of the palm, so that the wearable projection device is projected on the palm of the hand.
  • the color of the image and the uniformity of the brightness are high.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
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Abstract

一种穿戴式投影装置及投影方法被提供，该投影方法包括：获取手掌各区域的颜色分布信息和亮度分布信息；根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数；根据确定的颜色输出参数和确定的亮度输出参数控制投影模块输出图像。利用本发明实施例提供的穿戴式投影装置及投影方法，该穿戴式投影装置在手掌上投影而形成的图像具有较高的颜色均匀性以及亮度均匀性。

Description

穿戴式投影装置及投影方法 技术领域
本发明的实施例涉及一种穿戴式投影装置及投影方法。
背景技术
穿戴式投影装置是以手掌作为投影的屏幕。
然而，不同使用者手掌的形状、手掌的掌纹、手掌的颜色等的差异较大，并且，如图1所示，穿戴式投影装置02在投影时，穿戴式投影装置02发射的光线与手掌01之间所呈的投影角度较小，穿戴式投影装置02发射光线的最近点和最远点相差的角度较大，且，穿戴式投影装置02发射光线在手掌01上显示图像时，位于中心线两侧的部分的宽度L1和L2不同，导致在手掌上投影形成的图像的颜色均匀性以及亮度均匀性较差。
发明内容
本发明的实施例提供了一种穿戴式投影装置及投影方法，该穿戴式投影装置使用该投影方法投影时在手掌上形成图像的颜色以及亮度的均匀性较高。
一方面，本发明的实施例提供一种穿戴式投影装置的投影方法，包括：获取手掌各区域的颜色分布信息和亮度分布信息；根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数；并根据确定的颜色输出参数和确定的亮度输出参数确定图案输出参数；以及根据确定的图像输出参数控制投影模块输出图像。
示例性地，所述获取手掌各区域的颜色分布信息和亮度分布信息包括：获取手掌各区域的RGB图案信息；根据获取的手掌各区域的RGB图案信息确定手掌各区域的颜色分布信息和亮度分布信息。
示例性地，所述根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数包括：根据获取的手掌各区域的颜色分 布信息确定基准颜色值，并根据确定的基准颜色值、设定的标准颜色信息以及确定的手掌各区域的颜色信息确定修正后的颜色输出参数。
示例性地，所述基准颜色值为手掌中心区域各颜色信息的平均值。
示例性地，所述根据确定的基准颜色值、设定的标准颜色信息以及确定的手掌各区域的颜色信息确定修正后的颜色输出参数可以根据下述公式计算：
Figure PCTCN2014090022-appb-000001
Figure PCTCN2014090022-appb-000002
其中，U'(x,y)为修正后的红色色调输出参数，V'(x,y)为修正后的蓝色色调输出参数，U(x,y)为确定的手掌不同区域的颜色分布信息中的红色色调信息，V(x,y)为确定的手掌不同区域的颜色分布信息中的蓝色色调信息，Us为设定的标准颜色信息中的红色色调信息，U0为确定的基准颜色值中的红色色调值，Vs为设定的标准颜色信息中的蓝色色调信息，V0为确定的基准颜色值中的蓝色色调值。
示例性地，所述根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数包括：根据获取的手掌各区域的亮度信息分布信息确定手掌各区域的亮度矫正因子，并根据各区域的亮度矫正因子、以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数。
示例性地，所述根据各区域的亮度矫正因子、以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数可以根据下述公式计算：
Hand(x,y)＝Y(x,y)/Y(max)
Y'(x,y)＝Y(x,y)×Hand(x,y)
其中：Y'(x,y)为修正后的亮度输出参数，Y(x,y)为手掌各区域的亮度信息，Hand(x,y)为亮度矫正因子，Y(max)为手掌各区域的亮度信息中的亮度最高的亮度值。
示例性地，所述根据各区域的亮度矫正因子、以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数可以根据下述公式计算：
Figure PCTCN2014090022-appb-000003
Figure PCTCN2014090022-appb-000004
其中，Y'为修正后的亮度输出参数，Y为手掌各区域的亮度信息，
Figure PCTCN2014090022-appb-000005
为亮度校正因子，h为投影装置出光面中心距离手掌的距离，
Figure PCTCN2014090022-appb-000006
为投影装置的出光面的出射光角度，θ0为投影装置的出光面的出射光角度的中心线与手掌之间所呈角度，L为投影装置在手掌投影区域自靠近投影装置一端向远离投影装置一端的长度，N为投影装置在手掌投影区域自靠近投影装置一端向远离投影装置一端方向上像素的总行数，i为投影装置在手掌投影区域内自靠近投影装置一端向远离投影装置一端方向上像素所在行数。
另一方面，本发明的实施例还提供了一种穿戴式投影装置，包括：采集装置，用于采集手掌各区域的图案信息；处理单元，与所述采集装置信号连接，用于根据所述采集装置采集的手掌各区域的图案信息获取手掌各区域的颜色分布信息和亮度分布信息，且根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数；以及投影模块，用于根据确定的颜色输出参数和确定的亮度输出参数控制投影模块输出图像。
示例性地，所述获取装置为RGB摄像头，采光方向与所述投影模块的出光方向平行。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为穿戴式投影装置在手掌上投影时的示意图；
图2为穿戴式投影装置在手掌上投影时的另一种示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例的技术方案进行清楚、完整地描述。显然， 所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的实施例提供一种穿戴式投影装置的投影方法，该投影方法包括：
步骤S201：获取手掌各区域的颜色分布信息和亮度分布信息；
步骤S202：根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数；
步骤S203：根据确定的颜色输出参数和确定的亮度输出参数控制投影模块输出图像。
示例性地，在本发明的实施例中，设定的标准颜色信息是显示系统的显示标准，例如，普通的PC系统为sRGB标准，TV系统为NTSC标准。
上述穿戴式投影装置的投影方法中，在未开始投影之前，首先通过步骤S201获取手掌各区域的颜色分布信息和亮度分布信息，然后通过步骤S202根据获取的颜色分布信息确定修正后的颜色输出参数，并且根据获取的亮度分布信息确定修正后的亮度输出参数，最后通过步骤S203根据确定的颜色输出参数和确定的亮度输出参数控制穿戴式投影装置的投影模块输出图像。
其中，最终确定的图像输出参数中，对由于手掌颜色对穿戴式投影装置在手掌上的投影图像的影响进行了修正，进而使穿戴式投影装置在手掌上投影形成图像的颜色以及亮度的均匀性较高。
示例性地，上述步骤S201中，获取手掌各区域的颜色分布信息和亮度分布信息，包括：
获取手掌各区域的RGB图案信息；
根据获取的手掌各区域的RGB图案信息确定手掌各区域的颜色分布信息和亮度分布信息。获取的RGB图案信息转换为YUV格式的信息，进而确定手掌各区域的颜色分布信息和亮度分布信息。
示例性地，在上述步骤S202中，根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，包括：
根据获取的手掌各区域的颜色分布信息确定基准颜色值，并根据确定的基准颜色值、设定的标准颜色信息以及确定的手掌各区域的颜色信息确定修 正后的颜色输出参数。
示例性地，所述基准颜色值为手掌中心区域各颜色信息的平均值。
示例性地，上述根据确定的基准颜色值、设定的标准颜色信息以及确定的手掌各区域的颜色信息确定修正后的颜色输出参数，可以根据下述公式计算：
Figure PCTCN2014090022-appb-000007
Figure PCTCN2014090022-appb-000008
其中，U'(x,y)为修正后的红色色调输出参数，V'(x,y)为修正后的蓝色色调输出参数，U(x,y)为确定的手掌不同区域的颜色分布信息中的红色色调信息，V(x,y)为确定的手掌不同区域的颜色分布信息中的蓝色色调信息，Us为设定的标准颜色信息中的红色色调信息，U0为确定的基准颜色值中的红色色调值，Vs为设定的标准颜色信息中的蓝色色调信息，V0为确定的基准颜色值中的蓝色色调值，x和y是手掌上某点的坐标。
示例性地，在上述步骤S202中，根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数，包括：
根据获取的手掌各区域的亮度信息分布信息确定手掌各区域的亮度矫正因子，并根据各区域的亮度矫正因子以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数。
示例性地，上述根据各区域的亮度矫正因子以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数可以根据下述公式计算：
Hand(x,y)＝Y(x,y)/Y(max)
Y'(x,y)＝Y(x,y)×Hand(x,y)
其中：Y'(x,y)为修正后的亮度输出参数，Y(x,y)为手掌各区域的亮度信息，Hand(x,y)为亮度矫正因子，Y(max)为手掌各区域的亮度信息中的亮度最高的亮度值，x和y是手掌上某点的坐标。
示例性地，上述根据各区域的亮度矫正因子以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数还可以根据下述公式计算：
Figure PCTCN2014090022-appb-000009
Figure PCTCN2014090022-appb-000010
其中，Y'为修正后的亮度输出参数，Y为手掌各区域的亮度信息，
Figure PCTCN2014090022-appb-000011
为亮度校正因子，如图2所示，h为投影装置2出光面的中心距离手掌1的距离，
Figure PCTCN2014090022-appb-000012
为投影装置2的出光面的出射光角度，θ0为投影装置2的出光面的出射光角度的中心线与手掌1之间所呈角度，L为投影装置2在手掌1的投影区域自靠近投影装置2一端向远离投影装置2一端的长度，N为投影装置2在手掌1的投影区域自靠近投影装置2一端向远离投影装置2一端的方向上像素的总行数，i为投影装置2在手掌1的投影区域在自靠近投影装置2一端向远离投影装置2一端方向上像素所在的行数。
本发明实施例还提供了一种穿戴式投影装置，包括：
采集装置，用于采集手掌各区域的图案信息；
处理单元，与采集装置信号连接，用于根据采集装置采集的手掌各区域的图案信息获取手掌各区域的颜色分布信息和亮度分布信息，且根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数；
投影模块，用于根据确定的颜色输出参数和确定的亮度输出参数控制投影模块输出图像。
示例性地，上述采集装置为RGB摄像头，采光方向与投影模块的出光方向平行。
对于根据本发明实施例的穿戴式投影装置的投影方法以及穿戴式投影装置，通过根据修正后的颜色输出参数和修正后的亮度输出参数控制穿戴式投影装置的投影模块输出图像，从而对手掌颜色对穿戴式投影装置在手掌上的投影图像的影响进行了修正，且对手掌不同位置的反射率和投影角度等对在手掌上的投影图像进行了修正，使得穿戴式投影装置在手掌上投影形成图像的颜色以及亮度的均匀性较高。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在 内。
本申请要求于2014年4月28日递交的中国专利申请第201410175568.7号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (10)

  1. 一种穿戴式投影装置的投影方法，包括：
    获取手掌各区域的颜色分布信息和亮度分布信息；
    根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数；
    根据确定的颜色输出参数和确定的亮度输出参数控制投影模块输出图像。
  2. 根据权利要求1所述的投影方法，其中所述获取手掌各区域的颜色分布信息和亮度分布信息包括：
    获取手掌各区域的RGB图案信息；
    根据获取的手掌各区域的RGB图案信息确定手掌各区域的颜色分布信息和亮度分布信息。
  3. 根据权利要求1所述的投影方法，其中所述根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，包括：
    根据获取的手掌各区域的颜色分布信息确定基准颜色值，并根据确定的基准颜色值、设定的标准颜色信息以及确定的手掌各区域的颜色信息确定修正后的颜色输出参数。
  4. 根据权利要求3所述的投影方法，其中所述基准颜色值为手掌中心区域各颜色信息的平均值。
  5. 根据权利要求4所述的投影方法，其中所述根据获取的基准颜色值、设定的标准颜色信息以及确定的手掌各区域的颜色信息确定修正后的颜色输出参数根据下述公式计算：
    Figure PCTCN2014090022-appb-100001
    Figure PCTCN2014090022-appb-100002
    其中，U′(x,y)为修正后的红色色调输出参数，V′(x,y)为修正后的蓝色色调输出参数，U(x,y)为确定的手掌不同区域的颜色分布信息中的红色色调信 息，V(x,y)为确定的手掌不同区域的颜色分布信息中的蓝色色调信息，Us为设定的标准颜色信息中的红色色调信息，U0为确定的基准颜色值中的红色色调值，Vs为设定的标准颜色信息中的蓝色色调信息，V0为确定的基准颜色值中的蓝色色调值。
  6. 根据权利要求1-5中任一项所述的投影方法，其中所述根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数包括：
    根据获取的手掌各区域的亮度信息分布信息确定手掌各区域的亮度矫正因子，并根据各区域的亮度矫正因子以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数。
  7. 根据权利要求6所述的投影方法，其中所述根据各区域的亮度矫正因子以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数根据下述公式计算：
    Hand(x,y)＝Y(x,y)/Y(max)
    Y′(x,y)＝Y(x,y)×Hand(x,y)
    其中：Y′(x,y)为修正后的亮度输出参数，Y(x,y)为手掌各区域的亮度信息，Hand(x,y)为亮度矫正因子，Y(max)为手掌各区域的亮度信息中的亮度最高的亮度值。
  8. 根据权利要求6所述的投影方法，其中所述根据各区域的亮度矫正因子以及确定的手掌各区域的亮度分布信息确定修正后的亮度输出参数根据下述公式计算：
    Figure PCTCN2014090022-appb-100003
    Figure PCTCN2014090022-appb-100004
    其中，Y′为修正后的亮度输出参数，Y为手掌各区域的亮度信息，
    Figure PCTCN2014090022-appb-100005
    为亮度校正因子，h为投影装置出光面中心距离手掌的距离，
    Figure PCTCN2014090022-appb-100006
    为投影装置的出光面的出射光角度，θ0为投影装置的出光面的出射光角度的中心线与手掌之间所呈角度，L为投影装置在手掌投影区域自靠近投影装置一端向远离投影装置一端的长度，N为投影装置在手掌投影区域自靠近投影装置一端向远离投影装置一端方向上像素的总行数，i为投影装置在手掌投影区域内自靠近 投影装置一端向远离投影装置一端方向上像素所在行数。
  9. 一种穿戴式投影装置，包括：
    采集装置，用于采集手掌各区域的图案信息；
    处理单元，与所述采集装置信号连接，用于根据所述采集装置采集的手掌各区域的图案信息获取手掌各区域的颜色分布信息和亮度分布信息，且根据获取的手掌各区域的颜色分布信息以及设定的标准颜色信息确定修正后的颜色输出参数，根据获取的手掌各区域的亮度分布信息确定修正后的亮度输出参数；
    投影模块，用于根据确定的颜色输出参数和确定的亮度输出参数控制投影模块输出图像。
  10. 根据权利要求9所述的穿戴式投影装置，其中所述采集装置为RGB摄像头，采光方向与所述投影模块的出光方向平行。
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