JP2015114501A - Display device and control method for display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of selecting a palette for designating a color to be plotted in accordance with the color vision characteristics of a viewer.SOLUTION: A projector 100 as a pallet having a plurality of color data includes: a pallet selection part 310 for selecting one pallet from among a plurality of pallets; a color selection part 320 for selecting one color data from among the plurality of color data owned by a first pallet selected by the pallet selection part; a plotting processing part 160 for plotting a line image 280 in the color shown by the color data selected by the color selection part; an image processing part 170 for generating a composite image in which the line image 280 is superimposed on an input image; and an image projection part 220 for displaying the composite image.

Description

  The present invention relates to a display device and a display device control method.

Conventionally, when a position pointing operation is performed with a pointing device such as a mouse on a screen on which a target image is projected by a projector, the pointing position of the pointing device is acquired and the cursor is superimposed on the target image and drawn. A projector is known (see, for example, Patent Document 1). In such a projector, the movement trajectory of the cursor can be generated as a line image, and the generated line image and the target image can be combined and displayed.
Such a projector displays a palette for designating the color for drawing the movement locus on the screen, and the user selects a desired color from the color information indicated on the palette, thereby drawing the movement locus in the desired color. it can. The color information shown on the palette is color information of a plurality of colors called basic colors that are generally used, and color data that is most visible when projected by a projector is adopted.

JP 2012-129593 A

However, depending on the color vision characteristics of viewers viewing the image projected by the projector, the line image drawn with the color selected from the palette may be difficult to see. With conventional projectors, it is not possible to select another palette. Therefore, it has been desired to improve visibility for viewers with different color vision characteristics.
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a display device and a display device control method capable of selecting a palette for designating a color to be drawn according to the color vision characteristics of the viewer. .

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1]
The display device according to this application example includes a palette having a plurality of color data, and includes a palette selection unit that selects one of the plurality of palettes, and a first palette selected by the palette selection unit. A color selection unit that selects one of the plurality of color data, a drawing unit that draws a first image in a color indicated by the color data selected by the color selection unit, and an input image The image processing apparatus includes: a combining unit that generates a combined image in which the first image is superimposed; and a display unit that displays the combined image.

  According to such a configuration, one of a plurality of palettes can be selected, and the first image can be drawn using the color selected from the color data of the selected first palette. By appropriately selecting the first palette according to the above, it is possible to improve the visibility of the first image in the composite image obtained by superimposing the first image and the input image.

[Application Example 2]
In the display device according to the application example described above, it is preferable that at least one of the plurality of palettes includes the plurality of color data that can be easily identified by a color weak person.

  According to such a configuration, since at least one of the plurality of palettes has a plurality of color data that can be easily identified by the color weak, it is possible to improve the visibility of the first image for the color weak.

[Application Example 3]
The display device according to the application example includes an OSD processing unit that superimposes an OSD image including the palette selection unit and the color selection unit on the composite image synthesized by the synthesis unit and displays the OSD image on the display unit. preferable.

  According to such a configuration, since the OSD image can be superimposed on the composite image and displayed on the display unit, the operability can be improved.

[Application Example 4]
In the display device according to the application example described above, it is preferable that the display device includes an instruction unit that moves and instructs an instruction image to be displayed on the display unit, and the first image shows a locus of movement of the instruction image.

  According to such a configuration, it is possible to improve the visibility of the trajectory along which the instruction image has moved.

[Application Example 5]
In the display device according to the application example, the drawing unit draws the first image by switching the first palette to a second palette different from the first palette, thereby drawing the second image. It is preferable that the composition unit generates the composite image by switching the first image and the second image at a predetermined time interval.

  According to such a configuration, the first image drawn using the selected first palette and the second image drawn using the second palette different from the first palette for a predetermined time. Since a composite image is generated by switching at intervals, a composite image corresponding to a wide range of color vision characteristics can be generated and displayed.

[Application Example 6]
In the display device according to the application example, it is preferable that the composite image includes information on the palette on which an image superimposed on the input image is drawn.

  According to such a configuration, it is possible to notify the viewer of palette information by displaying information about the palette included in the composite image.

[Application Example 7]
The display apparatus control method according to this application example includes a palette having a plurality of color data, a palette selection step for selecting one of the plurality of palettes, and a first selected in the palette selection step. A color selection step for selecting one of the plurality of color data included in the palette, a drawing step for drawing the first image with a color indicated by the color data selected in the color selection step, and an input The method includes a combining step for generating a combined image obtained by superimposing the first image on an input image, and a display step for displaying the combined image.

  According to such a configuration, one of a plurality of palettes can be selected, and the first image can be drawn using the color selected from the color data of the selected first palette. By appropriately selecting the first palette according to the above, it is possible to improve the visibility of the first image in the composite image obtained by superimposing the first image and the input image.

1 is a block diagram illustrating a configuration of a projector according to an embodiment of the invention. The figure explaining the synthesized image projected with a projector. The figure which shows an example of an annotation setting screen. The figure which showed the color scheme pattern of the palette by the RGB value. The figure which shows an example of the projection image which the projector projected on the screen.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment)
Hereinafter, a projector will be described as a display device according to an embodiment of the present disclosure with reference to the accompanying drawings.
FIG. 1 is a block diagram showing a configuration of the projector 100 that projects the projection image IMG on the screen SC, and FIG. 2 is a diagram for explaining a composite image projected by the projector 100.
The projector 100 includes an image signal input unit 110, a pointing instruction unit 120, an instruction information determination unit 130, an operation unit 150, a drawing processing unit 160, an image processing unit 170, an OSD processing unit 190, an OSD memory 195, a focus control unit 200, a zoom. A control unit 210, an image projection unit 220, an operation unit 150, and a control unit 180 that performs overall control thereof are provided.
The image signal input unit 110 inputs image data from the storage medium 30 such as a USB memory or a compact flash (registered trademark). In this case, the image signal input unit 110 includes a USB port and a memory card slot (not shown). In this embodiment, image data is input from the storage medium 30 via the image signal input unit 110. However, an image signal is input from a video device (external device) such as a video recorder or a DVD player. It is good also as a structure. In this case, the image signal input unit 110 includes an HDMI (registered trademark) terminal, a video terminal, and the like.

The pointing instruction unit 120 is an instruction means for instructing on the screen SC by an operator's operation, and includes an input operation function such as an input button (not shown) installed on the projector 100 and a projection area of the screen SC. An instruction image such as an arrow image such as a cursor MC is displayed, and a movement instruction function for instructing the movement of the cursor MC by rotating a wheel or pressing a direction button is provided. The pointing instruction unit 120 outputs an operation signal corresponding to the input operation function and a movement signal corresponding to the movement instruction to the instruction information determination unit 130.
The pointing instruction unit 120 is not limited to an instruction via a button or the like installed on the projector 100, and inputs an operation signal or a movement signal from a mouse or a computer connected to the projector 100 via a predetermined interface. Aspects can also be envisaged. The pointing instruction unit 120 is a pen-shaped indicator that includes a light emitting unit. The movement information that the operator grips and moves on the screen SC is detected by a detection unit such as a camera, and the detected movement information is detected. It is also possible to assume a mode in which the pointing instruction unit 120 is notified.

The instruction information determination unit 130 determines a process to be executed by the projector 100 based on an operation signal or a movement signal input from the pointing instruction unit 120. In the present embodiment, any one of “cursor movement processing”, “drawing processing”, “line type change processing”, “line color change processing”, “color palette change processing”, and “change processing end” is assumed. In addition, the instruction information determination unit 130 acquires coordinate information (points) of the cursor MC displayed on the screen SC based on the movement signal input from the pointing instruction unit 120.
The drawing processing unit 160 executes various processes based on the processing content determined by the instruction information determination unit 130 and the coordinate information of the cursor MC. For example, when the process determined by the instruction information determination unit 130 is “drawing process”, the movement trajectory of the cursor MC is represented by a line image 280 (first image) based on the coordinate information of the cursor MC as shown in FIG. 1). In this drawing process, a line image 280 (drawing data) to be drawn is stored in a drawing memory (not shown).
The line width and line color for drawing the line image 280 are drawn based on the setting information set on the annotation setting screen 300 (FIG. 3). The line image 280 is not limited to a straight line, and includes a free curve according to the movement locus of the cursor MC. For example, a mode in which characters and figures are formed by combining line images 280 can be assumed. The drawing processing unit 160 corresponds to a drawing unit.

The image processing unit 170 performs image combining processing for combining the image data input to the image signal input unit 110 and the drawing data (line image 280) stored in the drawing memory by the drawing processing unit 160. In this case, the image data and the drawing data are drawn on different layers, and a composite image (synthesized image data) is generated by superimposing data drawn on different layers. For example, by synthesizing the image input to the image signal input unit 110 in FIG. 2A and the line image 280 in FIG. 2B, a composite image as shown in FIG. 2C is generated. .
Further, the image processing unit 170 performs image quality adjustment such as resolution conversion, brightness adjustment, contrast adjustment, sharpness adjustment, or various images such as trapezoidal distortion correction based on an image processing program stored in advance for image data. Processing is performed, and the processed image data (hereinafter referred to as “corrected image data”) is stored in a frame memory (not shown). Note that the image data is composite image data when combining with drawing data (line image 280), and is input to the image signal input unit 110 when combining with drawing data (line image 280). Image data.

Further, the image processing unit 170 outputs the corrected image data to the OSD (On Screen Display) processing unit 190.
In this embodiment, the image processing unit 170 first generates composite image data, and adopts a mode in which various image processing is performed on the generated composite image data. It is also possible to adopt a mode in which various image processing is performed on the image data and then combined with the drawing data (line image 280) to generate combined image data. The image processing unit 170 corresponds to a synthesis unit.
The OSD processing unit 190 performs processing for superimposing OSD screens such as various menu screens and message screens on the image of the corrected image data input from the image processing unit 170 based on instructions from the control unit 180. OSD image data representing graphics, fonts, etc. forming the OSD image is stored in the OSD memory 195. Therefore, when the control unit 180 instructs to superimpose the OSD image, the OSD processing unit 190 reads appropriate OSD image data from the OSD memory 195 and superimposes the OSD image data on a predetermined position of the input corrected image data. Execute the process. The corrected image data combined with the OSD image data is output to the light valve drive unit 230.

In the present embodiment, an annotation setting screen 300 will be described as one of menu screens displayed as an OSD screen. FIG. 3 is a diagram illustrating an example of the annotation setting screen 300. The annotation setting screen 300 is a screen for setting parameters that can be used (changed) when a line drawing is drawn by operating the pointing instruction unit 120. For example, if the process determined by the instruction information determination unit 130 is any one of “line type change process”, “line color change process”, and “color palette change process”, the OSD processing unit 190 displays the annotation setting screen 300. Corresponding OSD image data is read from the OSD memory 195 and displayed in the lower left area of the projected image IMG.
The annotation setting screen 300 projects the image data input from the image processing unit 170 onto the screen SC, and is displayed in the lower left area of the projected image IMG while the operator sets the annotation (display on). When the instruction information determination unit 130 determines that the process based on the operation of the pointing instruction unit 120 is “end of change process”, the OSD processing unit 190 deletes the annotation setting screen 300 and the annotation setting screen 300 is displayed. The projected image IMG is displayed in the area that has been displayed in a superimposed manner (display off).

The annotation setting screen 300 includes a palette selection unit 310, a color selection unit 320, and a line type selection unit 330. These are all selected and instructed via the pointing instruction unit 120.
The palette selection unit 310 selects a color arrangement pattern (pallet) for instructing the drawing color of the line image 280. In the present embodiment, the palette selection unit 310 includes a palette selection radio button 312, a palette information display check box 314, and an automatic switching check box 316.
The palette selection radio button 312 selects any one of palette A, palette B, and palette C. In this embodiment, the palette A (first palette) has commonly used colors and is configured with a basic color arrangement pattern as a reference, and the palette B and palette C (second palette) are In addition, it is configured with a basic color arrangement pattern that is easy to identify for the color weak (P-type, D-type, T-type, H-type, etc.). In this embodiment, three types of selectable palettes are displayed, but the number of types is not limited.

Here, FIG. 4 is an example in which the color data of each color arrangement pattern of the palette A and the palette B is represented by RGB values, and each color arrangement pattern (color 1 to color 12) of the selected palette is displayed on the color selection unit 320. Is done. For example, when palette A is selected with the palette selection radio button 312, the “color 1” area at the upper left of the color selection unit 320 is filled with a color whose RGB value corresponds to (255, 0, 0). When palette B is selected by the palette selection radio button 312, the “color 1” area at the upper left of the color selection unit 320 is filled with a color whose RGB value corresponds to (255, 40, 0).
The palette information display check box 314 can select whether or not to display the information of the palette selected by the palette selection radio button 312 on the screen SC. The automatic switching check box 316 is used to switch the line image 280 between the selected palette and the palette A at a predetermined time interval when the palette selection radio button 312 selects a palette B or a palette C other than the palette A. You can choose whether or not. Note that the line image 280 drawn by the palette B or C corresponds to the second image.
The color selection unit 320 can select a color for drawing the line image 280. The operator can select a drawing color by instructing a desired color area of the color selection unit 320 with the pointing instruction unit 120.

The line type selection unit 330 can select a line type for drawing the line image 280. The operator can select a line type and a line width by instructing a desired line type region of the line type selection unit 330 with the pointing instruction unit 120. In this embodiment, the line type selection unit 330 can also select a setting for automatically adding an arrow to the tip of the line image 280.
Returning to FIG. 1, the focus control unit 200 measures the distance to the screen SC, and based on the measured distance, the focus lens (illustrated) constituting the image projection unit 220 for adjusting the focus with respect to a predetermined part of the image. The focus state is adjusted by moving (omitted) in the optical axis direction.
The zoom control unit 210 changes the focal length by moving a zoom lens (not shown) constituting the image projection unit 220 for enlarging / reducing an image displayed on the screen SC in the direction of the optical axis. The enlargement / reduction ratio of the image (video) displayed on the SC is changed.
The image projection unit 220 projects an image based on the image data output from the OSD processing unit 190 on the screen SC, and includes a light source lamp 250, a liquid crystal light valve 260, a projection lens 270, a lamp driving unit 240, and a light valve. A driving unit 230 is included. The image projection unit 220 corresponds to a display unit.

As the light source lamp 250, a halogen lamp, a metal halide lamp, or a high-pressure mercury lamp can be applied. Further, instead of the light source lamp 250, a solid light source such as a laser or an LED may be used. The liquid crystal light valve 260 is configured by a liquid crystal panel or the like in which liquid crystal is sealed between a pair of transparent substrates, and a transparent electrode capable of applying a driving voltage for each minute region to the liquid crystal is provided on the inner surface of each transparent substrate. Pixels are formed in a matrix. The lamp driving unit 240 turns on the light source lamp 250 based on a lighting command from the control unit 180. The light valve driving unit 230 sets a light transmittance of each pixel by applying a driving voltage corresponding to the corrected image data input from the OSD processing unit 190 to each pixel of the liquid crystal light valve 260.
With the above configuration, in the image projection unit 220, the illumination light emitted from the light source lamp 250 is modulated by passing through the liquid crystal light valve 260. The modulated image light is combined for each pixel by a light combining optical system (not shown) (such as a dichroic prism), and is projected on the screen SC by the projection lens 270.

Note that the image projection unit 220 adopting another method instead of the liquid crystal display method as described above can be applied. Specifically, a projection method using DMD (Digital Micromirror Device), so-called DLP (Digital Light Processing) (registered trademark) method. That is, in the DLP method, the light of the lamp that shines in white is condensed by the lens and applied to the DMD, and the light when the individual mirrors of the DMD are inclined to the on state is magnified by another lens and projected onto the screen SC. The present invention can be applied to a projector of such a system.
The operation unit 150 is provided in the main body of the projector 100 and has a group of buttons for performing various operations. The button group includes a power button for switching the power on / off, a trapezoidal distortion correction button for correcting vertical and horizontal trapezoidal distortion, a focus button for adjusting focus, and a zoom button for performing zoom adjustment. It is. The operator can perform various settings (adjustments) of the projector 100 by operating these operation buttons.

  The control unit 180 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. The CPU is a central processing unit that performs various arithmetic processes, and performs overall control of the projector 100 by inputting and outputting signals to and from each unit. The ROM stores a control program and control data used for the CPU to perform various arithmetic processes. This control program includes an image processing program used in the image processing unit 170 described above. The ROM also stores an OS (Operating System) that is basic software. The RAM is used as a work area when the CPU performs various arithmetic processes.

  FIG. 5 shows an example of a projected image IMG projected by the projector 100 onto the screen SC. In the projected image IMG, an image of the image data input to the image signal input unit 110 and a line image 280 drawn based on the settings on the annotation setting screen 300 are superimposed and displayed. In addition, since display of palette information is set in the palette information display check box 314 of the annotation setting screen 300, the information of the selected palette is displayed at the bottom of the projected image IMG. Further, when automatic switching is set in the automatic switching check box 316 of the annotation setting screen 300, the palette B and the palette A are switched at a predetermined time. For example, when the line image 280 is drawn in blue, the color of the line image 280 is an RGB value (0, 65, 255) and (0, 0, 255) are switched at a predetermined interval.

According to the embodiment described above, the following effects can be obtained.
(1) When projecting the projected image IMG by superimposing the line image 280 on the input image using the annotation function of the projector 100, the color arrangement pattern for drawing the line image 280 is set to a palette for general color blind persons or for the color weak Therefore, an optimal line image 280 corresponding to the color vision characteristics of the viewer who views the projection image IMG can be displayed.
(2) Since information about the selected palette can be displayed on the screen SC that projects the projection image IMG, information on the palette displaying the line image 280 can be notified to the viewer.
(3) When the line image 280 is drawn with the color scheme selected from the palette for the color-blind person, it can be switched to the color scheme of the palette for the general color senseer at a predetermined time interval. The line image 280 can be visually recognized.

As mentioned above, although this invention was demonstrated based on embodiment shown in figure, this invention is not limited to this embodiment, The modification as described below can also be assumed.
For example, the projector 100 includes a camera that captures the projection image IMG projected on the screen SC, captures the line image 280 of the projection image IMG, analyzes the color of the captured image, and projects the image based on the analysis result. A mode of correcting the color of the line image 280 can also be assumed. Thereby, the drawing color of the line image 280 can be matched with the color designated by the palette regardless of the color of the projection surface of the screen SC.
Although the projector 100 has been described as an example of the display device, the present invention is not limited to this, and the present invention can be applied to a display device that displays an image or the like on a display panel such as a liquid crystal display. Moreover, the apparatus which implements the above methods may be realized by a single apparatus or may be realized by combining a plurality of apparatuses, and includes various aspects.
Each configuration in each embodiment and a combination thereof are examples, and addition, omission, replacement, and other changes of the configuration can be made without departing from the spirit of the present invention. Further, the present invention is not limited by the embodiments, but is limited only by the scope of the claims.

  DESCRIPTION OF SYMBOLS 30 ... Storage medium, 100 ... Projector, 110 ... Image signal input part, 120 ... Pointing instruction | indication part, 130 ... Instruction information determination part, 150 ... Operation part, 160 ... Drawing process part, 170 ... Image process part, 180 ... Control part , 190 ... OSD processing unit, 195 ... OSD memory, 200 ... focus control unit, 210 ... zoom control unit, 220 ... image projection unit, 230 ... light valve drive unit, 240 ... lamp drive unit, 250 ... light source lamp, 260 ... Liquid crystal light valve, 270 ... projection lens, 280 ... line image, 300 ... annotation setting screen, 310 ... palette selection unit, 312 ... palette selection radio button, 314 ... palette information display check box, 316 ... automatic switching check box, 320 ... Color selection unit, 330 ... Line type selection unit, SC ... Screen, IMG ... Shot images.

Claims (7)

A palette having a plurality of color data, a palette selecting unit for selecting one of the plurality of palettes;
A color selection unit for selecting one of the plurality of color data included in the first palette selected by the palette selection unit;
A drawing unit for drawing the first image in a color indicated by the color data selected by the color selection unit;
A combining unit that generates a combined image obtained by superimposing the first image on the input image that is input;
And a display unit that displays the composite image. The display device according to claim 1,
At least one of the plurality of palettes includes the plurality of color data that can be easily identified by a color weak person. The display device according to claim 1,
A display device, comprising: an OSD processing unit that superimposes an OSD image including the palette selection unit and the color selection unit on the composite image synthesized by the synthesis unit and displays the OSD image on the display unit. The display device according to any one of claims 1 to 3,
An instruction unit for moving and indicating an instruction image to be displayed on the display unit;
The display device according to claim 1, wherein the first image shows a locus of movement of the instruction image. The display device according to any one of claims 1 to 4,
The drawing unit generates the second image by switching the first palette to a second palette different from the first palette and drawing the first image,
The display device characterized in that the combining unit switches the first image and the second image at a predetermined time interval to generate the combined image. The display device according to any one of claims 1 to 5,
The display device, wherein the composite image includes information on the palette on which an image superimposed with the input image is drawn. A palette having a plurality of color data, the palette selecting step for selecting one of the plurality of palettes;
A color selection step of selecting one of the plurality of color data included in the first palette selected in the palette selection step;
A drawing step of drawing the first image in a color indicated by the color data selected in the color selection step;
A synthesis step of generating a synthesized image in which the first image is superimposed on the inputted input image;
And a display step for displaying the composite image.

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