JP3985813B2 - Image display device and image display method - Google Patents

Description

  The present invention relates to an image display apparatus and an image display method that allow a user to easily perform color adjustment on a video on a DVD medium or an image on a personal computer.

  As a means for performing color correction and noise removal on the screen, it is disclosed to perform correction work by displaying two screens, a reference window and a work window. FIG. 8 shows two window screens for correction, but a screen with incomplete colors, that is, a screen in a state before correction is displayed on the work window, while the reference window has It has been proposed to display the same or previous and subsequent frames, paste data from related normal frames, and add corrections. (See Patent Document 1).

In addition, as a means for color correction on the screen, a cursor for designating the color in the screen, an adjustment color palette for displaying the adjustment color, and a target color palette for displaying the designated target color are used. Work is disclosed. FIG. 9 shows a color adjustment screen for this purpose. The color at the specified position in the screen is displayed on the adjustment color palette with the cursor, while the target color palette is displayed in the color of the adjustment color palette. It has been proposed that the user-desired correction can be performed by displaying the color after the correction to the color. (See Japanese Patent Application No. 2003-194204)
JP 2002-262218 A

  However, in the DVD (Digital Versatile Disk) media that are on the market in recent years and the broadband media that is displayed on a personal computer, various color processing is performed before reaching the user, and the color display far from the color that the user likes is displayed. May end up. A display device with a mechanism that allows users to freely adjust the color has also been proposed, but since the image before and after color correction is always constant, that is, while viewing the image before color correction, Since the image is changed, the changing image is an image after color correction, and the image before color correction is not changed. Therefore, it is difficult for the user to change the color easily and continuously. As can be seen from FIG. 8 given as a conventional example in Japanese Patent Laid-Open No. 2002-262218, when a work is performed by displaying a reference window on the left side of the screen and a work window on the right side of the screen, the color of a specific place is set. There is a problem that if the color is changed once and the color at the same place is changed, the color after the change is not stored in the memory and accurate and simple color correction cannot be continuously performed.

  Further, in Japanese Patent Application No. 2003-194204, when correcting the color, the color at the sampling point captured by the cursor is displayed in the adjustment color palette as in the conventional example, and the color after changing the color is the target color. Since it is always displayed on the palette, the color change can be recognized by the first color change, but if you want to change the color after the change to your favorite color, Since the color of the color changes, it does not remain in the accurate memory, and it becomes difficult to change to the color of your choice. Therefore, there is a problem that it is difficult to continuously change the color of the same point.

  In consideration of the above-described problems, the present invention provides an image display device and an image that can realize that a user can easily and continuously perform color correction on broadband media displayed on, for example, a DVD media or a personal computer. The object is to provide a display method.

The first aspect of the present invention is a display means (10) for inputting and displaying a video, a trapezoid correction means for correcting the keystone of the video, and a color adjustment position display means (1) for designating a color adjustment position in the video. A color display means (2) for displaying the color at the adjustment position, a color change means (7) for changing the color at the adjustment position, and a change for displaying the color after the color is changed by the color change means. A color adjustment position display means (1), the color display means (2), the color change means (7), and the post-change color display means (3). wherein disposed in the image, and displays the color displayed on the color display means (2) in the color changing means (7) after the change, the change after the color display means the color after the change at the next (3), while reflecting the image, again the color display means the color displayed by the change after the color display means (3) Since the image display apparatus to be displayed on 2), an effect that the user can color correction easily and continuously.

  2. The image display device according to claim 1, wherein when the achromatic color is selected by the color adjustment position display means in the video, the color display means is not displayed or the color change means is not displayed. Therefore, it has the effect that color correction can be performed without breaking the balance of the image adjusted for white balance.

  According to a third aspect of the present invention, after the keystone correction, the movement amount of the color adjustment position display means is limited so that at least one end of the color adjustment position display means in the video exists in the video display area after the keystone correction. Therefore, the adjustment position display means can select only the video in the video display area in the video after the keystone correction.

According to a fourth aspect of the present invention, the display means, the color adjustment position display means, the color display means, the color change means, and the post-change color display means are arranged before the trapezoid correction means, and the keystone correction is performed after the color change. The image display device according to claim 1, wherein the adjustment position can be moved without restricting the adjustment position display means within the image display area after the keystone correction.

According to a fifth aspect of the present invention, a display step for inputting and displaying an image, a trapezoid correction step for correcting the keystone of the image, a color adjustment position display step for displaying a color adjustment position in the image, and the adjustment position a color display step of displaying a color, and a color changing step of changing the color of the adjustment position, and a post-change color display step of displaying the color after changing the color by the color changing step, the color adjustment position display step, the color display step, the color changing step, and the post-change color display step is carried out within the image after changing the color displayed by the color display step in the color changing step, change the color after displayed in the changed color-displaying step, as well as reflected in the image, the image to be displayed again in the color display step the color displayed by the color display step after the change Since a How to Display, an effect that may be the first present invention similar users color correction easily and continuously.

  As described above, according to the present invention, the color after color correction is immediately reflected and displayed on broadband media displayed on a DVD medium, a personal computer, etc., so that continuous color correction is easily performed while referring to it. The effect that it becomes possible is acquired.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings.

(Embodiment 1)
First, the image display apparatus according to the first embodiment of the present invention will be described with reference to FIG.

  FIG. 5 is an external view of the projector 100. The projector 100 processes the input video signal and presses the POWER button 150 to enlarge the projection lens 190 using an internal light source and ride valve not shown. Outputs the projected image. As an input, it has a Video input 170 and an RGB input 160, and each connects an external device. In addition, a mouse port such as USB is provided, and the mouse 130 is connected to operate as a setting state of the projector 100 or a pointer that can move on the screen. The same function can be realized by the remote controller 60 and the operation button 140 (and a determination button (not shown)). The cursor display button 141 has a function for turning on / off the cursor display.

  Next, description will be made with reference to FIG. 6 which is a detailed block diagram of the projector 100 according to the first embodiment of the present invention.

  The VIDEO terminal 11 is a terminal for inputting an NTSC composite video signal.

  The S-VIDEO terminal 12 is a terminal for inputting an S video signal.

  The RGB / YPbPr terminal 13 is a terminal for inputting an RGB signal or a YPbPr signal.

  The input selector 21 is a selector for selecting one of the composite video signal input from the VIDEO terminal 11 and the S video signal input from the S-VIDEO terminal 12.

  The Y / C separation circuit 23 is a circuit for separating the composite video signal input by the color decoder 22 into a Y signal and a C signal.

  The color decoder 22 is a decoder for color-decoding a Y / C separated signal or an inputted Y / C signal into a YPbPr signal.

  The matrix circuit 24 is a circuit for performing matrix processing when converting a YPbPr signal input from the RGB / YPbPr terminal 13 into an RGB signal.

  The input selector 25 is a selector for selecting one of the RGB signals input from the RGB / YPbPr terminal 13 and the RGB signals generated by the matrix circuit 24.

  The input selector 26 is a selector for selecting any analog signal from the YPbPr signal generated by the color decoder 22 and the RGB signal input by the input selector 25.

The A / D converter 30 is a converter for A / D converting the analog signal selected by the input selector 26 into a 10-bit digital signal.
The resizing / freezing / on-screen generation circuit 40 resizes the digital signal A / D converted by the A / D converter 30 in accordance with the number of pixels of the LCD (Liquid Crystal Panel) panels 91 to 93, and superimposes the on-screen. It is a circuit for making it. In addition, this circuit has a function of correcting the keystone.

  The color conversion circuit 50 is a circuit for converting the RGB data output from the resize / freeze / on-screen generation circuit 40 into an arbitrary color having a color coordinate selected by the user.

  The luminance calculation circuit 51 is a circuit that calculates luminance from the RGB data output from the color conversion circuit 50 and outputs an average value of luminance data in an arbitrary region.

  The input selector 52 is a selector for selecting any one of the RGB signals output from the color conversion circuit 50 and the RGB signals generated by the luminance calculation circuit 51.

  The main microcomputer 70 performs all control of the entire apparatus such as power supply (not shown) control, fan (not shown) control, temperature control, input switching control, etc., and when the user adjusts the color, the mouse 130 and the remote control 60 are operated. It is necessary to move the cursor 1 with the button 140, and based on the data from the external interface 71, the coordinate data is transferred to the color conversion circuit 50 and freeze control is performed on the resize / freeze / on-screen generation circuit 40.

  The digital phase expansion circuits 81 to 83 are circuits for phase expansion of the digital signal color-corrected by the color conversion circuit 50 in consideration of the operation speed of the drive drivers (not shown) of the LCD panels 91 to 93.

  A panel driving IC (Integrated Circuit) 90 is a circuit for driving the LCD panels 91 to 93.

  The LCD panels 91 to 93 are panels for color-displaying digital signals color-corrected by the color conversion circuit 50 and phase-developed by the digital phase development circuits 81 to 83.

  FIG. 7 shows an image display apparatus, that is, a display system using the projector 100. The image of the personal computer 61 connected to the RGB input 160 is projected onto the screen 110 using the projector 100. At this time, the remote controller 60 controls each function with respect to the projector 100, and the cursor on the projection screen can be moved with the up / down / left / right keys as means for moving the adjustment point of the present invention.

  Next, the operation of the present invention in this projector will be described with reference to FIG.

  First, the cursor 1 of the mouse 130, the remote controller 30 or the operation button 140 is displayed on a GUI (Graphic User Interface) or color adjustment position display means (here, referred to as cursor 1) cursor display button 141. Then, the user moves the cursor 1 to a position where the color is desired to be changed. After the movement, the color to be changed is determined by the mouse 130, the remote controller 30, or the operation button 140 (and a determination button not shown). When the color is determined, the selected color is displayed on a color display means (referred to herein as an adjustment color palette 2) for displaying the color to be adjusted at the same time or thereafter. At that time, color changing means (here, referred to as a color adjustment screen 7) is also displayed. The color adjustment screen 7 has adjustment scales such as a saturation scale 4, a hue scale 5, and a lightness scale 6, for example. Saturation here means the degree of vividness of the color. When the saturation is high, the color becomes more vivid, and when it is low, the color becomes cloudy. Hue represents shades of red, yellow, green, blue, purple. The lightness represents the brightness of the color. When the brightness is maximum, it is white, and when it is darkest, it is black. By using such an adjustment scale, the color selected by the cursor 1 is changed. Changed color display means for displaying the selected color in the adjustment color palette 2 and displaying the color after changing the adjustment scale simultaneously or after moving the respective adjustment scales on the color adjustment screen 7 (here, the target color palette) 3), the color to be adjusted is displayed on the adjustment scale, and when the color to be corrected is obtained, determination is made by the GUI, the mouse 130, the remote controller 60 or the operation button 140 (decision button not shown). Thereafter, the color change is reflected on the entire video display screen, and the desired color can be displayed. At the same time or after that, the color of the target color palette 3 is displayed on the adjustment color palette 2. When the color is subsequently changed, the color displayed on the adjustment color palette 2 is changed on the color adjustment screen 7 and the changed color is displayed on the target color palette 3. Then, the determination is made with the GUI, mouse 130, remote controller 60 or operation button 140 (decision button not shown). This operation is repeated continuously and changed to the desired color.

  Here, as a specific example, in FIG. 1, a cursor 1 is displayed at the center of the projected image. Next, by moving the mouse 130, the remote controller 60 or the operation button 140, the cursor 1 on the screen is moved to the vicinity of the center of the mountain in the projected image. By determining the position here, the cursor 1 is moved to the position indicated by the cursor 1. Mountain color data is taken into the internal circuit of the projector, and RGB is R (Red): 10 levels / 256 gradations, G (Green): 220 levels / 256 gradations, B (Blue): 20 levels / 256 floors, respectively. Recognize the key. The user changes this color displayed on the adjustment palette 2 on the color adjustment screen 7 so that the saturation scale 4 becomes higher, and R: 10 levels / 256 gradations, G: 230 levels / 256 floors. Tone, B: 8 levels / 256 gradations, displayed on the target color palette 3, and if the user changes to a favorite color, it is reflected and changed in the projected image. At this time, R: 10 level / 256 gradation, G: 230 level / 256 gradation, and B: 8 level / 256 gradation displayed on the target color palette 3 are displayed on the adjustment color palette 2 as they are. If you want to change the changed color further, adjust the color on the adjustment color palette 2 on which the new color is displayed again on the color adjustment screen 7 and repeat this to adjust the color to your liking. it can. Next, when changing the sun or the sky in the background other than the mountains, the color can be converted by moving the cursor 1 in the same manner.

  As described above, according to the present embodiment, the user displays trapezoid correction means for correcting the keystone, color adjustment position display means for specifying the color adjustment position in the video, and the color at the adjustment position for the input video signal. Color display means to change, color change means to change the color at the adjustment position, color change means to display the color after changing the color by the color change means, change the color by the color change means, then change to video By reflecting the later color and displaying the color displayed by the changed color display unit again on the color display unit at the adjustment position, it is possible to easily perform continuous color correction.

  In FIG. 1, an image before keystone correction is displayed, but it goes without saying that the same operation is performed even after keystone correction.

  The determination after the cursor position is moved in this embodiment is not particularly shown, but a determination button may be provided separately, or the function may be substituted by double-clicking the mouse 130 or the like. Further, the cursor 60 may be moved using the remote controller 60, the operation button 140, and a decision button (not shown).

  In the present embodiment, the cross-shaped cursor 1 is moved in conjunction with the movement of the remote controller 60, but the cursor may be a cross or a selection frame such as a square or a circle.

  Although the color adjustment screen 7 of this embodiment is displayed on the video signal display screen 10, it may be displayed and operated separately on a device such as a personal computer.

  Further, although the scale for adjusting the saturation, hue, and brightness is provided as the adjustment scale of the color adjustment screen 7 of the present embodiment, it may be a scale for adjusting the RGB gradation level, the RGB correction curve, and the contrast.

  Further, the adjustment scale of the color adjustment screen 7 of the present embodiment is provided with a scale for adjusting the saturation, hue, and brightness. However, not only the single color of the color captured by the cursor but also the vicinity of the chromaticity of the color. The color may be changed by weighting.

  Further, the display device of the present invention described above is described as a projector, but is not limited to the projector, and can be realized by a general display such as a plasma display or a liquid crystal display.

  Further, the processing of the present invention may be realized by software, and is not limited to the image display device, and it goes without saying that the display method itself is also effective.

(Embodiment 2)
The image processing apparatus according to the second embodiment of the present invention is the same as that of the first embodiment, displays a cursor on the screen, moves the cursor position on the screen with a control device such as a mouse, and the user changes the color. If the position is determined at the position where the color is to be converted, the image data at that position is displayed on the adjustment color palette 2, converted to a desired color on the color adjustment screen 7, and the color after color conversion is displayed on the target color palette 3. Let After that, the converted image is displayed on the image display screen, and the changed color displayed on the target color palette 3 is displayed on the adjustment color palette 2 so that the color correction can be continued.

  Here, the adjustment color palette 2 and the color adjustment screen 7 used in the second embodiment of the present invention will be described with reference to FIG. When the user corrects the color, when an achromatic cloud color as shown in the figure is selected by the cursor 1 as the color adjustment position display means for designating the color adjustment position, the adjustment color palette 2 is not displayed. Like that. Alternatively, the color adjustment screen 7 is not displayed. This is to prevent the adjustment color palette 2 from being displayed and trying to change the achromatic color on the color adjustment screen 7. If the achromatic color is changed by mistake, the white balance of the video will be lost and a suitable white color will not be displayed. Here, the white balance is to adjust the color development of R, G, and B so that white can be displayed correctly.

  As described above, according to the present embodiment, when the user selects the achromatic color by the color adjustment position display means for designating the color adjustment position in the video, the color at the adjustment position is not displayed or the color at the adjustment position is displayed. By not displaying the changing means, it is possible to perform desired color correction without affecting the white balance of the video.

  In this case, the color is limited to an achromatic color, but it is preferable that a color near the achromatic color is not adjusted because the white balance is lost when color correction is performed.

  Although the adjustment palette 2 and the color adjustment screen 7 cannot be displayed here, the purpose is to prevent the white balance from being lost, and it may be displayed and cannot be operated.

(Embodiment 3)
The image processing apparatus according to the third embodiment of the present invention is substantially the same as that of the first embodiment. The cursor is displayed on the screen, and the cursor position on the screen is moved by a control device such as a mouse. When the position is determined at the position where the color is to be converted, the image data at that position is displayed on the adjustment color palette 2, converted to a desired color on the color adjustment screen 7, and the color after color conversion is displayed on the target color palette 3. Display. Thereafter, the converted video is displayed on the video display screen.

  Here, the color adjustment position display means at the time of keystone correction used in the third embodiment will be described with reference to FIG. FIG. 3 shows an adjustment color palette 2, a target color palette 3, and a color adjustment screen 7. The entire image is keystone corrected.

  Here, the trapezoidal correction means that when an image is projected above or below the position where the projector is set, the projection lens of the projector body is projected upward or downward. For example, when projected upward, the lower end of an image that is originally rectangular is shorter than the normal length, and conversely, the upper end is longer than the normal length. Therefore, in the above case, the projected image has a trapezoidal shape with a short lower side (lower base) and a long upper side (upper base). In order to correct the trapezoidal image to the original rectangular shape, the image is projected back on the projector side into a trapezoid having a long lower side and a short upper side. In this case, in order to prevent selection of a color outside the trapezoidal video display area, the movement amount of the cursor 1 is limited so that at least one end of the cursor 1 enters the video display area after the keystone correction.

  As described above, according to the present embodiment, after the keystone correction, the movement amount of the color adjustment position display unit is limited so that at least one end of the color adjustment position display unit in the video exists, so that the user can It makes it possible to correct the color to your liking without worrying about the display area.

(Embodiment 4)
The image processing apparatus according to the fourth embodiment of the present invention displays a cursor on the screen, moves the cursor position on the screen with a control device such as a mouse, and determines the position at which the user wants to convert the color. The image data at that position is displayed on the adjustment color palette 2, converted to a desired color on the color adjustment screen 7, and the color after color conversion is displayed on the target color palette 3. Thereafter, the converted video is displayed on the video display screen.

  Here, the color adjustment position display means, color display means, color change means, and post-change color display means used in Embodiment 4 will be described with reference to FIG. FIG. 4 is a detailed block diagram of the projector 100 of this embodiment. 4 differs from FIG. 6 in that the positions of the resizing / freezing / on-screen generation circuit 40 and the color conversion circuit 50 are interchanged.

  First, the color conversion circuit 50 converts the color using the cursor 1, the adjustment color palette 2, the target color palette 3, and the color adjustment screen 7, and the video signal is converted into a resize / freeze / on-screen generation circuit 40. By correcting the keystone, the cursor 1 and the like are also corrected in the keystone, so that it is not necessary to limit the cursor 1 to the video display area.

  As described above, according to the present embodiment, the user adjusts the color adjustment position display means for specifying the color adjustment position in the video, the color display means for displaying the color at the adjustment position, and the adjustment position for the input video signal. The color changing means for changing the color of the image, the changed color display means for displaying the color after changing the color by the color changing means is arranged in front of the trapezoid correcting means for correcting the keystone, and the user can correct the keystone after changing the color. Makes it possible to easily and continuously correct the desired color without worrying about the video display area.

  The image display apparatus and the image display method according to the present invention have an effect that, when the user corrects the color, the color after the color correction is immediately reflected and displayed, so that the continuous correction can be easily performed. Useful in fields such as color correction and conversion.

Explanatory drawing which shows the image state of Embodiment 1 of this invention Explanatory drawing which shows the image state of Embodiment 2 of this invention. Explanatory drawing which shows the image state of Embodiment 3 of this invention. Detailed block diagram of the image display device of Embodiment 4 of the present invention External view of projectors according to Embodiments 1 and 4 of the present invention 1 is a detailed block diagram of an image display device according to a first embodiment of the present invention. The image display system figure explaining Embodiment 1, 4 of this invention Screen display for color correction in the conventional example Screen display for color correction in the conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cursor 2 Adjustment color palette 3 Target color palette 4 Saturation adjustment scale 5 Hue adjustment scale 6 Brightness adjustment scale 7 Color adjustment screen 10 Video signal display screen 11 VIDEO terminal 12 S-VIDEO terminal 13 RGB / YPbPr terminal 21 Input selector 22 Color decoder 23 Y / C separation circuit 24 Matrix circuit 25 Input selector 26 Input selector 30 A / D converter 40 Resize / freeze / on-screen generation circuit 50 Color conversion circuit 52 Input selector 60 Remote control 61 Personal computer 70 Main microcomputer 71 External interface 81- 83 Digital phase expansion circuit 90 Panel drive IC
91-93 LCD panel 100 Projector 110 Screen 130 Mouse 140 Operation button 141 Cursor display button 150 POWER button 160 RGB input terminal 170 Video input terminal 190 Projection lens

Claims (5)

Display means for inputting and displaying video;
Trapezoid correcting means for correcting the keystone of the image;
Color adjustment position display means for designating a color adjustment position in the video;
Color display means for displaying the color of the adjustment position;
Color changing means for changing the color of the adjustment position;
A post-change color display means for displaying a color after the color is changed by the color change means;
Comprising
The color adjustment position display means, the color display means, the color change means, and the changed color display means are arranged in the video,
After changing the color displayed on the color display means in the color changing means, the color after the change at the next displayed on the color display means the changed, as well as reflected in the image, displayed by the change after the color display means An image display device for causing the color display means to display the color again. 2. The image display device according to claim 1, wherein when the achromatic color is selected by the color adjustment position display means in the video, the color display means is not displayed or the color change means is not displayed. 2. The image according to claim 1, wherein after the keystone correction, the movement amount of the color adjustment position display means is limited so that at least one end of the color adjustment position display means in the video image exists in the video display area after the keystone correction. Display device. The image according to claim 1, wherein the display unit, the color adjustment position display unit, the color display unit, the color change unit, and the post-change color display unit are arranged before the trapezoid correction unit, and the keystone is corrected after the color change. Display device. A display step for inputting and displaying the video;
A keystone correction step for correcting the keystone of the image;
A color adjustment position display step for displaying a color adjustment position in the image;
A color display step for displaying the color of the adjustment position;
A color changing step for changing the color of the adjustment position;
A post-change color display step for displaying the color after changing the color in the color change step;
Have
The color adjustment position display step, the color display step, the color change step, and the post-change color display step are performed in the video,
After changing the color displayed by the color display step in the color changing step, the color after the change at the next display in the color display step after the change, as well as reflected in the image is displayed by the color display step after the change An image display method for displaying the color again in the color display step.

Images