JPS60204188A - Picture information processor - Google Patents

Abstract

PURPOSE:To save the storage capacity by eliminating an unnecessary signal component in analog video signal based on a normalized data, recording it and adding the unnecessary signal component at reproduction. CONSTITUTION:A video signal is converted by an A/D converter 52 under the control of a sampling controller 54 at recording and the controller 54 controls the converter 52 so that the unnecessary signal component in the video signal is not subject to A/D conversion based on the normalized data written in a ROM 51. A head signal is fed to an adder 56 to the digital video signal from which the unnecessary signal component is eliminated so as to obtain a digital video signal 58. The head signal added to the front edge of the signal 58 is read (62) via a recording/reproducing head 40 at reproduction, and which position the picture data exists to the frame is decoded by a CPU64 and the resulting picture data is read to a prescribed storage position of a frame memory 66. In such a case, the unnecessary part is added and the result is subject to D/A conversion and displayed on a TV monitor 200.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to an image information processing device that removes unnecessary image information from medical image information obtained from, for example, an endoscope device and then records the image information. It is.

[Prior art]

For example, when diagnosing a patient using an endoscope device that uses a solid-state image sensor or the like, an observation image signal (video signal) obtained from the image sensor is displayed on a TV monitor. In this case, the outline of the image guide section of the endoscope device is projected on the screen of the TV monitor, causing the following inconvenience. That is, when a circular outline is projected on a generally rectangular screen surface, the rectangular partitions and the rounded circular outer portions do not provide any medical image information.

Therefore, various problems have arisen in recording such information unnecessary for diagnosis as image data. For example, there is a drawback that extra storage capacity is required.

〔the purpose〕

SUMMARY OF THE INVENTION An object of the present invention is to provide an image information processing device that records image data only for a portion that matches the outline of the image and performs image processing such as deleting other portions in order to save storage capacity. It is to be.

〔overview〕

The image information processing apparatus of the present invention includes a determining means for determining valid image data and unnecessary image data in the analog image signal when recording/reproducing the analog image signal containing at least valid image data by digitalizing it; A position data generation means for generating relative position data of the unnecessary image data with respect to the analog image signal, and a determination signal generated from the determination means based on the relative position data, convert the unnecessary image data from the analog image signal. A/D conversion means for obtaining a dinotal image signal while removing unnecessary image data; addition means for adding the relative position data to the dinotal image signal from which the unnecessary image data has been removed; a recording processing circuit having at least a recording means for recording, a reproducing means for reproducing the dinotal image signal recorded in the recording means, and a reading device for reading the relative position data from the reproduced dinotal image signal from the reproducing means. means for reading out the removed unnecessary image data from the relative position data and the reproduced disotal image signal and superimposing it on the reproduced disotal image signal; and a reproduced disotal image signal on which the unnecessary image data is superimposed. The present invention is characterized in that it includes a reproduction processing circuit having at least a D/A conversion means for converting the image signal into the analog image signal.

〔Example〕

The present invention will be described in detail below with reference to the drawings.

According to the principle of the present invention, only necessary parts of the obtained image signal are sampled, and this sampled image signal is
/D conversion and recording on a recording member. In this case, information representing the size of the deleted unnecessary portion is recorded simultaneously with this signal.

FIG. 1 shows an entire system according to an embodiment of the present invention, and is an example when combined with an endoscope device.

In the figure, an endoscope apparatus 10 is introduced as an input signal source of an image information processing apparatus 100 of the present invention, and a TV monitor 200 for displaying an observed image is further connected.

First, the configuration of the endoscope device IO will be briefly described.

This endoscope device IO includes an image guide section 12, an operation section 14, a light guide section 16, a light source device 8, and a camera section 20. To explain the internal functions of this light source device 18, during normal diagnosis, the mirror (not shown) is tilted toward the collation land (not shown), and the light source device 18 is operated from one end of the glass fiber light 7141 part I6, for example. The collation light is emitted outward from the distal end portion 17 through a light guide optical path provided inside the portion 14 and the imageno guide portion I2.

On the other hand, when the imageno guide part j2 is inserted through its distal end 17 into the body cavity of a patient (not shown), an optical path separate from the fiber optical path of the light guide part 16 described above is formed, for example. Glass fiber image guide part J
An observed image of the inside of the body cavity irradiated with the collation light is introduced from the distal end portion 17 to the camera portion 20 through the optical path No. 2. Here, this observed image is converted into a 71°C air signal using a solid-state imaging table or the like (not shown), and the image information processing apparatus 10 of the present invention, which will be described later,
Supply to 0. The output signal of this processing device 100 is displayed on a TV monitor 200.

Next, this processing device 100 will be explained with reference to an embodiment of the circuit shown in FIG.

2) The family congratulation image on the screen of the monitor 200 in Figure 1, '41 will be explained. The endoscopic image is circular and T
V monitors generally have a rectangular shape determined by an aspect ratio (324).

By standardizing the circular dimensions, the magnification of the camera 2 part 20 of the endoscope apparatus JO can be reduced to a predetermined size. That is, a:b
:c...Selected so as to satisfy certain conditions. This allows images to be displayed on the screen at the same ratio regardless of the endoscope device.

This standardized data is stored in the ROM 57 in advance.

An analog video signal (image signal) from the camera section 20 is supplied to an A/D converter 52 and also to a synchronization signal separation circuit 53.

Here, synchronization signals (horizontal and vertical synchronization signals) are separated from this video signal and supplied to the sampling controller 54. Further, the sampling controller 54 is supplied with a standardized data signal from the ROM 5J. This data signal performs sampling control as described later. This sampling controller
One of the output terminals of 54 is connected to a control input terminal of A/f converter 52 . As a result, in synchronization with the above-mentioned separated horizontal and vertical synchronization signals, the analog video signal input manually for a predetermined period of time is A/D converter 52.
/D conversion to obtain a digital video signal.

On the other hand, a control signal is supplied from the other output terminal of the sampling controller 54 to the header signal generation path 55 in synchronization with the aforementioned synchronization signal.

That is, a header signal indicating which portion of the video signal is sampled is generated from the normalization information.

To be more specific, the input analog video signal has
Unwanted signal components, i.e. fil! outside the contour! Under the control of the tumbling controller 54, this video signal, which also includes the signal portion of 1, is converted to rA/I). As a result, based on the standardized data written in the ROM, the sampling controller 54 controls the A/I converter 52 so that unnecessary signal components in the video signal are not A/D converted.

In this way, the digital signal that removes unnecessary signal components is
The above-mentioned header signal is added to the video signal by the adder 56, and the dizotal video signal 5 shown in Fig. 2 is added.
You can get 8. This video signal 58 is removed from the recording part of the original disk of large recording capacity M, or a magnetic disk, etc.'i
o via the recording/reproducing head 40. This dizotarpidio signal 58 has a period of one horizontal scanning period, one vertical synchronizing signal per field frFK, and one horizontal opening signal per frame are added to the leading edge portion of the signal.

Next, the case of reproducing this digital video signal 58 will be explained with reference to FIG.

That is, each video signal 5 is
The header signal (b) added to the leading edge of 8 is sent to the reader 6.
2, thereby decoding the position of the image data in the frame.

This decoding is performed by CPU 64 and the resulting image data is stored in a predetermined storage location in frame memory 66. At this time, black level information for parts other than the image data in the frame, that is, unnecessary parts, is generated by a generator (not shown) and added. The dinotal video signal obtained in this way (including signal components of unnecessary parts) is D/A
The converter 68 performs D/A conversion and displays the TV monitor 2.
() Projected on the 0 screen.

It is easy to understand that this monitor image is a normal endoscopic image as shown in FIG. 1, since it has been added with in-nephew information based on already standardized information.

A second example will be described. First, although the image is not standardized as mentioned above, it reports Etsuzo 1〆 (for example, the signal component where only this part is high brightness due to the border)
Consider the case where exists in the image. In this case, this exotic information is used as the above-mentioned standardization information and is written in the ROM 51 in advance. Below, the same recording and reproduction processing as in the first embodiment can be executed.

According to this example, since only the round portion of a circular image can be recorded as valid data, the capacity of the recording member 30 can be saved. In other words, it is particularly effective for image files that record a large amount of image information.

Next, a third embodiment will be explained with reference to FIG.

For example, assume that there is contour information only at two or four points on the diagonal of an endoscope image. In this case, this image information is scanned once and read including this contour information, and an analog video signal A-VDS is obtained from the camera section 20. Next, from this video signal A-VDS, a synchronization signal is similarly separated by a synchronization signal separation path 53, and a contour information detection circuit 82 calculates the diameter of a circular portion containing valid image data by a CPU 84. Process it. Based on this processing result, the same processing as that for the normalization information described above is executed to create an analog video signal A -
Converts VDS to A/D. Adding the edger signal to the converted signal by the adder 56 (1, it is possible to obtain the digital video signal 88 as shown in FIG. Record.

''-When reproducing the digital video signal 88 described above, it can be reproduced by the same processing means as in the first embodiment, so a detailed explanation will be omitted.

The present invention is not limited to the embodiments described above, and it will be easy for those skilled in the art to make various modifications.

For example, in the above-described embodiment, the image data was obtained from an endoscope, but the present invention is not limited to this, and it is also possible to obtain it by taking a microscopic photograph or an astronomical photograph.

Furthermore, it is clear that the present invention can be implemented even when the shape of the effective image information is not only circular but also other shapes.

〔Effect of the invention〕

As described in detail in 7, according to the present invention, unnecessary image information from image data is deleted in advance and recorded, and when this is played back and displayed, the above-mentioned unnecessary image information is deleted. Since information can be added and projected, the recording capacity of the image data recording member can be saved, and the shape of the image is not limited by the shape of the projected screen.

[Brief explanation of the drawing]

FIG. 1 is an overall view of an embodiment of the image information processing device of the present invention in combination with an endoscope device, and FIG. 2 shows a specific circuit of the recording circuit of the processing device of FIG. block diagram,
FIG. 3 is a block diagram showing a specific circuit of the reproducing circuit, and FIG. 4 is a block diagram showing a specific circuit of the recording circuit of the third embodiment 1p1H. 53... Synchronization signal separation circuit, 54... Sampling controller, 55... Header signal generator, 30...
...Recording member, 100...Image information processing device, 200
...TV monitor. Applicant's agent Patent attorney Atsushi Tsuboi Continuation of page 1 [Phase] Inventor Original 1) Deficiency 0 Inventor Hirozawa Isao Unai Reference Number Inside Co., Ltd.

Claims (1)

[Claims] ■ When an analog image signal containing at least valid image data is digitalized and recorded/reproduced, a determination means for determining valid image data and unnecessary image data in this analog image signal, and a determination means for determining valid image data and unnecessary image data in this analog image signal; Regarding the analog image signal of the image data, a position data generating means for generating egg-to-egg position data is used to determine the relative position data from the analog image signal according to a determination signal generated from the determination means based on the relative position data. A/D conversion means for obtaining a digital image signal while removing unnecessary image data; addition means for adding the relative position data to the digital image signal from which the unnecessary image data has been removed; and the added digital image. a recording processing circuit having at least a recording means for recording a signal; a reproducing means for reproducing the digital image signal recorded on the recording means; and a reader for reading the relative position data from the reproduced digital image signal from the reproducing means. means for reading the removed unnecessary image data from the relative position data and the reproduced digital image signal and superimposing it on the reproduced digital image signal; a reproduced digital image from which the unnecessary image data is subtracted; An image information processing device comprising: a reproduction processing circuit having at least D/A conversion means for converting a signal into the analog image signal. 2. The device according to claim 1, wherein the determining means is comprised of a synchronization signal separation circuit and a sampling controller. 3. The determining means is comprised of a contour information detection circuit and a CPU. A device according to claim 1, characterized in that: 4. 3. The apparatus according to claim 1, wherein the recording means is a magnetic disk. 5. The apparatus according to claim 1, wherein the recording means is an original disk.