JPH01252993A - Image display method - Google Patents

Abstract

PURPOSE:To grasp the general image by decreasing the amount of information of an image, by displaying the resolution of a specified area of a display surface high, and displaying the resolution of other areas low. CONSTITUTION:When an observer 5 is looking in the direction of an original point O, with the original point O as the center, for example, an area O1 is displayed at a high resolution, an area O2 at a medium resolution, and an area O3 at a low resolution. That is, the image information is thinned out by a control device 7 controlling an input signal modulating device 3, according to the information from a position sensor 6, which detects the traveling of the direction of the line of sight by a magnetic sensor 6b attached to the observer 5's head. After the thinned-out signal is set to a display side signal demodulation device 4, it is displayed on a display surface 1b of a display device 1, and when the observer 5 turns to the direction of the original point O', the areas of high, medium, and low resolutions are traveled to the areas O1'-O3'. Thus the observer 5 can always have the area of high resolution within his visual field.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an image display method for displaying a large screen with a small amount of image information.

(Conventional technology) In order to increase the sense of realism, it is necessary to increase the size of the display surface.
Previously, images were displayed at a fixed resolution across the entire large screen.

[Problem to be solved by the invention]

However, in such a conventional image display method, a huge amount of image information is transmitted and it takes a very long time. Another known method is to first send information at a coarse resolution and then send information at a fine resolution so that the image can be grasped at an early stage, but this method also does not reduce the image information. .

The object of the present invention is to improve these drawbacks and provide an image display method that enables display on a large screen with a smaller amount of image information.

[Means to solve the problem]

The image display method according to the present invention displays a specific area of a display surface with high resolution and other areas with low resolution.

(Effect) In this invention, the amount of image information is reduced compared to the case where the resolution of the entire display surface is increased.

[Embodiment] FIG. 1 is a system configuration diagram for explaining an embodiment of the image display method of the present invention. In this figure, numeral 1 denotes a display device such as a projector, CRT, etc. (the projector is shown here), which consists of a projector 1a and a display surface 1b, and has uniform resolution over the entire surface in terms of hardware. Reference numeral 2 denotes an image input device such as a camera or a VTR, and 3 a human power signal conversion device, which outputs image information of a specific portion such as the center of the screen at a high resolution, and thins out the other portions to a lower resolution.

Reference numeral 4 denotes a display-side signal demodulation device that demodulates the image information output from the human power signal conversion device 3 and displays it on the display surface 1b of the display device 1. 5 indicates the observer.

Now, in this example, if it is assumed that the area o1 has high resolution and the area 02 has low resolution, then when the observer 5's viewpoint is at the center of area 01, the origin 0, the area Even if the resolution of the 02 part is low and the image is vague, it doesn't bother me that much. Note that in order to realize the present invention, in addition to the method of changing the display resolution using software, an input device and a display device that have a high resolution of a specific part may be used using hardware. In this case, special conversion and demodulation of the signal becomes unnecessary.

FIG. 2 is a system configuration diagram for explaining another embodiment of the present invention, which is an expanded version of the system shown in FIG. In this figure, 6 is a position sensor that detects the line of sight direction of the observer 5 (i.e., the viewpoint on the display surface 1b), and here - as an example, a magnetic sensor 6b detects changes in the intensity of the magnetic field created by the source 6a. 15OTRAK (trade name of Magdanelda Klass Co., Ltd.), which has the following configuration, is used. 7 is a control device.

In this embodiment, when the observer 5 is looking in the direction of the origin O, as shown in FIG. In order to display the region 03 with a medium resolution and a low resolution, the control device 7 operates according to information from the position sensor 6 that detects the movement of the line of sight by the magnetic sensor 6b attached to the head of the observer 5. Human power signal conversion bag R3
control to thin out image information. The thinned out signal is
After being sent to the display-side signal demodulator 4, it is displayed on the display surface 1b of the display device 1. Then, when the observer 5 faces the direction of the origin ○', the height is high.

The medium and low resolution areas are areas 01', 02', and 0, respectively.
Moved to 3'. Therefore, the observer 5 can always see a high-resolution area within his or her field of vision.

FIG. 3 is a system configuration diagram for explaining still another embodiment using a special camera-type human-powered imaging device that has high resolution only in the vicinity of the center in terms of hardware. In this figure, 2' is a camera-type image input device whose resolution is high only near the center, and 8 and 9 are moving devices for the projector 1a and the image input device 2', respectively.

In this embodiment, the control device 7 operates the moving device 9 according to information from the position sensor 6 detected by the magnetic sensor 6b attached to the head of the observer 5, and the image input device 2' is controlled by the observer 5. The center of the projector 1a is directed toward the point O' toward which the observer 5 is facing by operating the moving device 8 while keeping the display surface 1b fixed. Compared to the software method shown in FIG. 2, this method does not require the input signal converting device 3, but requires mechanical driving of the projector 1a and the human-powered image device 2'. Also, in this case, if you send, for example, 1/2 of the length in both the vertical and horizontal directions at a high resolution, and the rest at 1/2 of that resolution, the image information will be smaller than when the entire length is sent at a high resolution. Reduced to 5/8.

Note that the sensor 6 for detecting the direction in which the observer 5 is facing may be a non-contact sensor using a TV left camera image processing device. Here, the direction in which the observer 5 is facing refers to the direction in which the head is facing or the direction in which the line of sight is facing.

Furthermore, in the above embodiment, the focus has been on increasing the resolution of the part that the observer 5 wants to see, but the person displaying the image may also raise the resolution of the part that he or she particularly wants to see. .

[Effects of the Invention] As explained above, the present invention displays high resolution in a specific area of the display screen and low resolution in other areas, so it is possible to suppress the amount of information in an image. Although the resolution is low in other areas, images are also displayed, which has the effect of making it possible to grasp the overall picture.

[Brief explanation of the drawing]

FIG. 1 is a system configuration diagram for explaining one embodiment of the image display method of this invention, FIG. 2 is a system configuration diagram for explaining another embodiment of this invention, and FIG. 3 is a system configuration diagram for explaining an embodiment of the image display method of this invention. FIG. 7 is a system configuration diagram for explaining still another embodiment. In the figure, 1 is a display device, 1a is a projector, 1b is a display surface, 2
．． 2' is an image human power device, 3 is a human power signal converter, 4 is a display side signal demodulator, 5 is an observer, 6 is a position sensor, 6a
6b is a magnetic sensor, 7 is a control device, and 8.9 is a moving device. Figure 1 Figure 2 V Quasi + Control l Figure 3 S, So Transfer V Temporary 1

Claims (1)

[Claims] An image display method characterized by displaying a specific area of a display surface with high resolution and displaying other areas with low resolution.