JPS63167923A - Image data input device - Google Patents

Abstract

PURPOSE:To display an operator's instructing operation as it is on a screen by photographing a movement of a fingertip, etc. on an input coordinate plane, and inputting a signal from a camera, to a display so as to move a cursor on the screen in accordance with its motion. CONSTITUTION:The photographing direction is determined so that a line for connecting the center of a photodetecting surface 10 of a CCD camera 7 and the center of a condensing lens 9 passes through the center of an input coordinate surface 4. Also, the photodetecting surface 10 and the condensing lens 9 are placed in parallel to the input coordinate plane 4, and 4c being similar to the plane 4 is obtained. Moreover, an image 5a of a hand 5 photographed by the camera 7 is brought to a raster scan, scanned from the left upper part of a screen to the horizontal direction, and when it reaches the right end, it returns to the left and moves downward by a prescribed distance and a scan in the main scanning direction is repeated again. In case of this raster scanning, an image 14a of a fingertip 14 is scanned as a shadow data first. Accordingly, by deciding that an image part which is scanned first is a fingertip for indicating a coordinate input position, position information can be prepared.

Description

[Detailed description of the invention] [Table of contents] - Overview - Field of industrial application - Prior art - Problems to be solved by the invention - Means for solving the problems - Effects - Examples - Effects of the invention [Overview] A pointing object such as a hand is moved on a human coordinate plane, this movement is photographed by a camera, and a signal from the camera is displayed to move a pointing mark (cursor) on the screen in response to this movement. Image data input device input to the device.

[Industrial application field]

The present invention relates to an image data input device for inputting coordinates for indicating an arbitrary position on a display screen in a computer system requiring coordinate input.

[Conventional technology]

Conventional coordinate input devices use a mouse, tablet, etc. to mechanically create position information by moving the mouse by hand or pressing the tablet at the required position, and convert this into an electrical signal. input into the display device.

[Problem that the invention seeks to solve]

Conventional coordinate input devices use a mouse, tablet, etc. as a man-machine interface during input, so there may be a discrepancy between the operator's actions or intentions and the display on the screen, or there may be a lack of unity and consistency in the sense of operation. It was insufficient.

The present invention has been made in view of the above points, and is an image data input device that can display an operator's instruction movement on the screen as it is, improves unity and consistency as a man-machine interface, and enhances the sense of use. For the purpose of providing.

[Means for solving problems]

In order to achieve the above object, the present invention provides an input coordinate plane, an imaging means for photographing an input indicator on the input coordinate plane, and a display device for displaying an instruction mark capable of indicating arbitrary coordinates within a screen. The position information of the indication mark is created based on the image taken by the imaging means.

[For production]

When an operator indicates a position on the input coordinate plane with a fingertip or the like, this is captured by an imaging means such as a camera, converted to coordinates on a display screen, and an instruction mark such as a cursor on the screen is moved based on this coordinate data.

〔Example〕

FIG. 1 shows the appearance of an embodiment of the present invention. A cursor 3 for position indication is displayed on the screen 2 of the display device l.

A coordinate input device 8 for providing positional information of the cursor 3 consists of an input coordinate plane 4 and a CCD camera 7. C.C.
The D camera 7 is fixed via an arm 6 above a corner of the input coordinate plane 4.

When inputting coordinates, the operator moves the hand 5 on the input coordinate plane 4, the CCD camera 7 photographs this, calculates the position of the fingertip from this image, and inputs this as position data to the display device. Based on this position data, the cursor 3 is moved to the designated position. Therefore, if the operator's hand moves in the direction of arrow A, the cursor 3 will move in exactly the same direction as arrow B on the screen.

The COD camera according to the present invention will be explained using FIG. 2. (a) If the CCD camera 70 is placed above the center of the input coordinate plane 4, an accurate image 4a corresponding to the shape of the input coordinate plane 4 can be obtained. However, if the COD camera 70 is placed in such a position, it will interfere with data input operations.

On the other hand, if the CCD camera 70 is placed above the corner of the input coordinate plane 4, as shown in FIG. 3(b), it will not interfere with the operation. However, in this case, the photographed image 4b becomes small.

Therefore, in the CCD camera according to the present invention, (C)
As shown in the figure, a light receiving surface 10 of an imaging element (not shown)
The direction of the camera's projection is determined so that the line connecting the center of the input coordinate plane 4 and the center of the condensing lens 9 passes through the center of the input coordinate plane 4, and the light receiving surface 10 and the condensing lens 9 are set parallel to the input coordinate plane 4. There is. As a result, an accurate image 4C having the same phase as that shown in FIG. 4(a) can be obtained on the input coordinate plane 4.

The structure of the input coordinate plane 4 is shown in FIG. Input coordinate plane 4
are upper and lower parts 1 with silicone rubber particles 13 interposed as spacers.
It is composed of a pair of electrode sheets 20. Each electrode sheet 2
0 is one in which the inner surfaces of elastic insulating sheets 11a and llb are coated with electrode films 12a and f2b. By pressing the upper electrode sheet 20 with your finger, the upper and lower electrode films 12
a and 12b are in contact and electrically conductive. This makes it possible to provide cursor position data by moving a finger on the input coordinate plane 4, and at the same time provide various operation signals of the display device at a desired position.

The input coordinate designated point according to the present invention will be explained with reference to FIG. 4. (a) Input the hand 5 on the coordinate plane 4 as shown in the figure.
In order to indicate the position by placing the finger on the finger, the fingertip 14 must be identified. Hand 5 photographed with the CCD camera mentioned above
The image 5a is raster scanned as shown in (b).

That is, it scans in the horizontal direction (main scanning direction) from the top left of the screen, returns to the left when it reaches the right edge, moves down a certain distance (sub scanning direction), and repeats scanning in the main scanning direction again.
In such a rask scanning, the image 14a of the fingertip 14 is first scanned as shadow data. Therefore, position information can be created by determining that the first scanned image portion is the fingertip that indicates the coordinate input position. This can be similarly applied, for example, to the case where C is indicated by holding a pen or the like in the hand.

In addition to specifying a position on the input coordinate plane 4, it is also possible to write figures and the like. In this case, input the written image data once and store it in the storage device. By switching the 0-order mode, the output from the CCD camera is read, and at the same time, the stored image data is read out. By performing exclusive OR with the output from the CCD camera and monitoring the output, data corresponding to the fingertip can be extracted from there.

Another embodiment of the present invention will be described using FIG. 5.

In this embodiment, a zoom mechanism 17 is provided in a CCD camera. The condenser lens 9 is composed of a combination of lenses and has a multi-stage switching zoom function. As a result, normally, the entire input coordinate plane 4 is imaged with a viewing angle, and when a small business card, card, etc. is input as image data, it is possible to image with a narrower viewing angle using the zoom function.

Therefore, the resolution of normal two-dimensional COD (256'' x
256′. ' or 51240' x 512 "") makes it possible to reliably input from large image data such as A4 size to small image data such as a business card.

〔Effect of the invention〕

As explained above, in the present invention, the movement of a finger or the like on the input coordinate plane is captured by a camera and converted into position information, which is used as coordinate input data on the display screen. The unity and consistency of the cursor movement on the screen is improved, resulting in a man-machine interface that is easy to use.

[Brief explanation of the drawing]

Figure 1 is an external view of an embodiment of the present invention, Figure 2 is a CC of the present invention.
FIG. 3 is an explanatory diagram of the D camera, FIG. 3 is a configuration diagram of an input coordinate plane, FIG. 4 is an explanatory diagram of a position information pointing point, and FIG. 5 is an explanatory diagram of a zoom mechanism of the present invention. 1...Display device, 2...Screen, 3...
Cursor, (...input coordinate plane, 7...
・CCD camera. External view of the embodiment of the present invention 1 Display device 2 Screen 3 °° cursor (b) Explanatory diagram of the COD camera of the present invention Figure 2 10... Light receiving surface input coordinate plane configuration diagram Figure 3 13...Silicon rubber particles (a) (b) Explanatory diagram of position information indicating point Fig. 4 An explanatory diagram of the zoom mechanism of the present invention Fig. 5 4... Input coordinate plane 17... Zoom mechanism

Claims (1)

[Claims] 1. An input coordinate plane (4), an imaging means (7) for photographing an input indicator (5) on the input coordinate plane, and an input coordinate plane (4) capable of indicating arbitrary coordinates within the screen (2). a display device (1) that displays an instruction mark (3);
) An image data input device characterized in that it is configured to create positional information of the instruction mark (3) based on the image of the pointer (3). 2. The image data input device according to claim 1, wherein the imaging means (7) comprises a CCD camera. 3. The CCD camera (7) is connected to the input coordinate plane (4)
is fixed above a position off the center of the CCD camera (7) so that a line connecting the center of the light receiving surface (10) of the CCD camera (7) and the center of the condensing lens (9) passes through the center of the input coordinate plane. 3. The image data input device according to claim 2, wherein the photographing direction of the CCD camera is determined, and the light receiving surface and the condensing lens are arranged parallel to the input coordinate plane. 4. The input coordinate plane (4) is comprised of a pair of upper and lower elastic electrode sheets (20) disposed facing each other via an insulating spacer.
3. The image data input device according to any one of items 3 to 3. 5. An image of the input indicator (5) taken by the imaging means is raster-scanned, and the position of the first scanned part of the image is used as the position information of the indicator mark (3). An image data input device according to any one of claims 1 to 4. 6. Any one of claims 1 to 5, characterized in that the imaging means (7) is equipped with a zoom mechanism for making it possible to change the viewing angle within the input coordinate plane. The image data input device according to item 1.