JPS62258548A - Picture input device - Google Patents

Abstract

PURPOSE:To eliminte part of an original from being hidden by a hand for describing a character while the original is being read/displayed by picking up the image of a transparent original placed on the original platen of light transmissivity from the rear side by a light means provided at the rear side. CONSTITUTION:A transparent sheet 5 written with a manuscript is placed upward on a transparent board 4 so that a lecturer itself reads the sheet. The image of the original transparent sheet 5 lighted by a lighting device 7 and viewed from the rear side is converted into an image viewed from the upper front, inputted to an image pickup device 1 and outputted on a monitor television set. When it is required to add description on the transparent sheet 5 being the original, it is executed from the upper front face by using a writing tool 6.

Description

[Detailed Description of the Invention] [□Industrial Application Field] The present invention relates to an image input method/equipment for outputting and displaying a document on a monitor screen or a J2 projector using an imaging device. It is.

[Conventional technology]

Conventionally, when a presenter/explainer (hereinafter referred to as a lecturer) needs to show a relatively large number of attendees an image of the original manuscript at a conference, briefing session, etc.,
Overhead projectors and the like are mainly used.

(Problem to be solved by the invention) However, with the conventional overhead projector as described above, when it becomes necessary to add characters, diagrams, etc. to the projected manuscript during the presentation, the Your hands and writing utensils will also be reflected on the screen, and parts of the manuscript may be hidden, resulting in extremely high costs. It had the drawback of being boring.

The present invention has been made by focusing on the problems of the prior art as described above, and in addition to solving the above-mentioned drawbacks, it is also possible to store this type of device inside a lecture table, etc., and to improve image input. The purpose is to provide a method/apparatus.

[Means for solving problems]

For this reason, in the present invention, a transparent original placed on a light-transmissive original table is configured to be imaged from the back side, and if necessary, an illumination means is provided on the back side. It is an attempt to achieve the desired goal.

(Function) With the method/configuration described above, even when adding notes to a manuscript during a presentation, only the hand and writing of the writer enters the optical path between the imaging device and the manuscript, so that the negative part of the manuscript is It will no longer be hidden.

(Example) Hereinafter, practical examples of the present invention will be explained in detail.

FIG. 1 shows an example 71 of the image input method/device according to the present invention.
A cross section showing the configuration of example h1. In Figures 2 and 3,
FIG. 6 is a perspective view illustrating the imaging positional relationship when the imaging device is used for iE normal imaging and this embodiment, respectively.

(Structure) In FIG. 1, numeral 1 denotes an area imaging means, for example, an imaging device using an area type solid-state image sensor R- or an image pickup tube used in a video camera, etc., which is turned upside down in its normal posture ( The direction of the arrow U indicates the missionary position. 2 is a reflecting mirror, 3 is the main body of the device, 4 is a transparent plate (original platen) for placing the original, 5 is a transparent sheet with 73', i or t'F inserted, 6 is a writing instrument, 7 is a lighting device disposed in the imaging device 1 (!!+1), 20 is an external monitor connection terminal, and 21 is a power supply device for supplying power to the imaging device 1 and the lighting device 7.

(Operation) Next, the operation according to the configuration 1- below will be explained. First, j
The transparent sheet 5 containing the 11F is placed face up on the transparent plate 4F so that the speaker can read it. 11<1 by light device 7! 1( ) The image seen from the back side of the original transparent sheet 5 is reflected by the reflecting mirror 2 on the back side 1
The image is converted into an image viewed from one side and input to the imager 1,
It is output to a monitor television or a video projector (not shown).

When it is necessary to write additional information on the transparent sheet S, which is a manuscript, it is done from the +'1E side using the writing instrument 6.

(Image Formation Positional Relationship) Next, the image formation positional relationship in the apparatus of this embodiment will be explained with reference to FIGS. 2 and 3. FIG. 2 is an imaging position relationship diagram when a video camera or the like is used as a normal imaging device 1 in a normal posture (U is upward). lO is the object, 1
Reference numeral 1 denotes a photographing lens of the imaging device, and 12 denotes its imaging surface.

In this case, the correct image of the subject 10 viewed from the imaging lens 11 side in the direction of the arrow a is output and displayed on a monitor (not shown) connected to the outside via the terminal 20.

FIG. 3 shows an image formation diagram for explaining the imaging relationship in the case (FIG. 1) in which the transparent sheet original 5 is displayed to a plurality of attendees in the conventional single-bar head projector style in this embodiment. The positional relationship diagram, Figure 4, shows the positional relationship diagram at that time.
f, "M" indicates the actual positional relationship between the imaging device and the external monitor image. The original 5 is placed on the image pickup device (for example, a TV camera) 1 with the ground upside down. It is projected onto the imaging surface 14. This j-most image iW714 is
Since the imaging plane 12 in FIG. 2 is imaged at a position rotated by 180 degrees within that plane, in this case, the D; If the correct original image 5 or the image 23 on the external monitor is
<The output is displayed. In other words, the lighting device 7 may be used in combination.

As is clear from the above, the present embodiment functions by arranging the imaging device upside down from its normal use. When writing additional characters, images, etc. on the document 5 from the direction in which the mark will be lost while the output is being displayed on the monitor in the state of writing, it is necessary to make sure that part of the document is not obscured by the illumination. It doesn't block the light.

(Other Usage Examples) FIG. 5 and No. 61 show the fourth phase diagrams in the other two usage tables, respectively.

The example in Figure 5 is +iA fi! i TV camera 1 on the beach 23 side
The example shown in FIG. 6 is an example in which the speakers 23 are arranged in a vertical position, and the example shown in FIG.

(Other Embodiments) In the above embodiments, the manuscript sheet is a transparent sheet 5, or when a writing instrument 6, for example, commonly known as a "felt ben", is used, a paper material with good continuity of ink for the pen is used. A clear image can be obtained in 1 minute even if paper is used.

In addition, in each embodiment described in Section 11i, the optical image was inverted by the reflecting mirror 2, but without using a reflecting mirror, the transparent sheet with the manuscript written on the back side was directly transferred to the transparent plate 4 by the imaging device 1. A method is also possible in which the image is captured through the 3D image plane and the image plane is electrically inverted.

In each of the above embodiments JJ, it is generally easy to accommodate this type of device inside a lecture table or the like.

[Effects of the Invention] As described below based on the embodiments, according to the present invention, when a manuscript is being presented/displayed and additional notes are added to the manuscript, a part of the manuscript is hidden by the writing hand. Also, when using a lighting device, the light rays will not be blocked.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of the image input device according to the present invention, and FIGS. 2 and 3 are imaging position relationship diagrams when the imaging device is used for normal imaging and this example, respectively. fS
Figure 4 shows the relative position of Figure 3 in practical use, and Figures 5 and 6 respectively show the position of Figure 4 in the other two usages.
It is a figure equivalent figure. 1-...Imaging device 2...Reflector 4...Transparent plate (original table) 5...Transparent sheet (original) 6... Writing instrument 7...Illuminating device 11・---・Imaging lens 14・------Imaging surface

Claims (3)

[Claims] (1) An image input device characterized by comprising area imaging means for capturing an image of a transparent original placed on a light-transmitting original table from the back side of the document table. (2) The image input device according to claim 1, further comprising illumination means for illuminating the document from the back side. (3) The image input device according to claim 1, wherein the image capturing means is a means for capturing an image of the original through a reflecting plate.