JPH0394383A - Image input device - Google Patents

Abstract

PURPOSE:To easily input a plane image by means of a video camera by removing the distortion of an image on a plane independently of the positional relation of the image at the time of inputting the image on the plane by the video camera. CONSTITUTION:A word processor 1 having an image input function includes a CPU 2, a ROM 3, a RAM 4, a storage part 5, a display part 6, a keyboard input part 7, a video camera 8, a video signal input part 9, an image data output part 10, and a system bus 11. At the time of inputting image data on a certain plane by the video camera 8, the inputted image on the distorted plane is converted into a video signal, the video signal is numerized to obtain image data projected to another plane by numerical operation. When a plane to be converted is properly selected, a correct image can be obtained independently of the positional relation between the camera 8 and the plane including the image. Consequently, a plane image can easily be inputted by the video camera.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an image input device that inputs an image, converts it into numerical data, and outputs the data to another information device.

[Prior Art] Conventionally, a video signal photographed by a video camera or the like was converted into lossless numerical data and then treated as video data without any processing.

[Problems to be Solved by the Invention] Conventionally, when image data on a certain plane is input using a video camera or the like, the image data is subject to large distortions due to the positional relationship between the camera and the plane. There was a problem that the

[Means for Solving the Problems] In the present invention, after converting the input and distorted image on a plane into numerical values as video signals, numerical calculations are performed to obtain image data projected onto another plane. By appropriately selecting the plane to be converted, a correct image could be obtained regardless of the positional relationship between the camera and the plane on which the image exists. Furthermore, in the present invention, as means for detecting the positional relationship between the camera and the input image, by arranging the image within a known fixed figure,
By investigating how this fixed figure is distorted.

[Operation] Distortion can be removed from a plane image input by a video camera regardless of the positional relationship between the camera and the image.

[Embodiment] FIG. 1 is a diagram showing a system configuration as an example of an embodiment of the present invention. 1 is a word processor (hereinafter referred to as word processor) having an image input function according to the embodiment. A CPU 2 controls the entire word processor 1, and a ROM 3 contains a control program, a fixed frame extraction program, and an image data conversion program. 4 is RAM for work
It is. 5 is a storage section, 6 is a display section, 7 is a keyboard input section, 8 is a video camera, 9 is a video signal input section, 10 is an image data output section, and 11 is a system bus.

FIG. 2 is a flowchart showing the operation of the image input function which is an embodiment of the present invention, and will be explained below using this figure. The image to be input is drawn inside a rectangular frame, which is a fixed figure whose shape is known in advance. A video signal obtained by photographing a space including this figure and an image to be input is inputted using the video camera 8 and the video signal input section 9 (step Sl). The input video signal is converted into numerical data by the discrete value converter and stored in the storage unit 5 (step S
2, S3). The fixed frame extraction program recognizes the fixed shape that has been transformed by calculation from this digitized image data, and when this fixed frame is converted to another plane, it uses the conversion parameters that will make the shape on the original plane. is found and a conversion equivalent to this is performed on the image drawn inside the frame (steps 34 to S6). This allows an image without distortion to be output (step S7).

[Effects of the Invention] According to the present invention, when an image on a plane is inputted by a video camera, distortion can be removed regardless of the positional relationship. This has made it easier to input planar images using a video camera.

[Brief explanation of drawings]

FIG. 2 is a flowchart showing the image input operation of the present invention. In the figure, 1...Word processor 2...CPU 3...ROM 4...RAM 5...Storage section 6...Display section 7...Keyboard input section 8...Video camera 9. ...Video signal input section 10...Image data output section 11...System bus

Claims (1)

[Claims] 1. Input means for inputting a spatial video signal; conversion means for converting the input video signal into discrete numerical data;
a processing means for processing the data; a specifying means for specifying an area on a certain plane in a space obtained as a video signal;
An image input device characterized by having a conversion means for converting an image on a plane in which the region is designated into an image projected onto another plane.