JPS59214724A - Method and apparatus for measuring temperature distribution - Google Patents

Abstract

PURPOSE:To obtain a temperature distribution measuring device suitable for diagnosis, by memorizing the temperature data in at least two regions, which are obtained by detecting the infrared rays from an object body, obtaining the temperature difference between the respective temperature data for every picture element, which is located at a symmetrical position with respect to an imaginary central line between the two aregions, and displaying the temperature distribution image. CONSTITUTION:Image data and character pattern data, which are separately written in memories 12 and 16, are simultaneously read in synchronization with the scanning of both surfaces of a display device 11 by horizontal and vertical position specifying signals from counters 21 and 22. The image data is sent to the display device 11 through a D-A converter 13 and a converter circuit 15, and a temperature distribution image Z is displayed. The character pattern data is sent to a level shift register 14 through an OR circuit 18. The circuit 14 forcibly performs the level shift of the level of the image signal, which is sent to a TV signal converting circuit 15, into a white level only when the character pattern is present. Therefore the characters of TCT35.0 and TW3.00J are superimposed on the temperature distribution image Z and displayed on the display device 11.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a method and technique for obtaining a temperature distribution image. The present invention relates to a method and apparatus for measuring temperature distribution which is displayed as a partial IT image.

[Prior art] In recent years, attempts have been made to use the symmetry of the human body as a guideline for the diagnosis of neurological disorders. Left and right asymmetry in humidity 'flj (supposed to be related to abnormalities in the white rhythmic nerve. In addition, for example, when diagnosing breast cancer, it is important to observe the symmetry of the humidity distribution between the left and right breasts ( This has great meaning.

[Object and Structure of the Invention] The present invention is directed to the T-' 9f '34 used in this diagnosis.
/J, temperature distribution measurement method and S! The aim is to provide a photographic location, and the image obtained by detecting infrared rays from the subject.
Temperature data of at least two regions having the same shape and area are stored, and the difference between the respective temperature data is calculated for each pixel located at a symmetrical position across a center line imaginary between the two regions. It is characterized by displaying 11 images of temperature based on the difference in temperature. Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawing.

[Example] Figure 1 shows an example of the present invention! There is a configuration diagram C, in which C1 is an infrared detector, 2 and an optical scanner for forming the image of the detector on the subject and raster scanning (J), and 3 is the optical scanner. - It is a reference blackbody that causes reference infrared rays to enter the detector at a horizontal scanning angle of 0-j by The detected signals are sent to the processing circuit 5, which includes an absolute memory reproducing circuit, a linearizer, etc. The temperature signal is converted into a digital signal by an A-D converter 6, and then sent to an image memory 8 via a recording control circuit 7 and stored therein.

9 is a temperature range setting circuit that covers the displayed temperature range by 81 degrees based on the signal a specifying the center i quality and the signal A specifying the width of the reservoir; 10 is a circuit for setting the pixel data stored in the image memory This is a readout selection circuit for reading out and extracting those within the temperature range set by the setting circuit 9, and the extracted pixel data is in a form that falls within the gradation range of the monitor JI electrode ray tube display device 11. The image is stored in the image memory 12 for displaying one image. The pixel data stored in the memory 12 is read out at high speed in synchronization with preview scanning of the display device 11, and is read out at high speed by the DA converter 13. Circuit 1/to level shift 1! and is sent to the monitor cathode ray tube display device 11 via the television signal conversion circuit 15. Also, the data of the character information pattern C stored in the character table small memory 16 and the frame pattern data stored in the frame display memory 17 are read out at the same time, and after being added by the circuit 18, the level shift is performed. 1 to circuit 14, and the pattern exists (
] In order to increase the brightness 1q, the screen of the display device 11 displays information related to the temperature 51ΦZ and the image, such as CT (central thirst), W (temperature range) candy, and C rectangular frames A and B are displayed superimposed.

Reference numeral 19 denotes a signal that is supplied to the television signal conversion circuit 15.
+-Press 1st cycle i:, tag 11. 20 is a synchronization signal generation circuit that generates a pixel clock signal that divides one raster by 256 pixels, 21 is an oscillator that generates a pixel clock signal that divides one raster by 256 pixels; 2 bows are run L-L- (water si + counter that generates position designation No. 15, 22 is the above +i31!!11 (9° which is a counter that counts No. 3 1-1 and generates vertical position designation signal) In response to the horizontal and vertical white position designations from the two counters, data is read out from the base lines 12, 16 and 17 and sent to the display device 11.

231 frame setting circuit 24△, 2'! 13; frame display memory for displaying the frame pattern in and out of the memory 7; 25; a frame address setting circuit 26A, which sequentially generates addresses specifying the corresponding pixels in the memory B in order to read from the memory B;
26B is a register that temporarily stores the temperature data of the pixels sequentially output from the memory 8 based on the address signal from the frame address setting circuit 25; 27 is a subtraction circuit that calculates the difference between the furniture data stored in each register; 28 (an amplifier that amplifies the difference data obtained by multiplying by an appropriate gain; 29 is a bias circuit that applies an appropriate bias to its output; the output of the bias circuit 29) is the display memory; 12
and written into the area corresponding to frame A in the memory 12. Reference numeral 30 denotes a character writing circuit for writing character patterns into the character display memory 16.

In the above-described configuration, the image memory 8 has a storage area of 256 pixels in the horizontal direction, 240 lines in the vertical direction, and, for example, 12 bits in the depth direction, as shown in FIG. Then, place the image of the 1st output device on the optical system A-Yari-2.
, one (horizontal and double run, (dA of each obtained run)
7-data or △-1 is converted into redisicle 1 word, and 12 bits of data are stored in the corresponding position. -ta (J
, one-sided running 'Ri,
211 can be changed. 256 x 240 pixels are written on the display panel 12 as shown in Figure 3 and all < HI].
is set (or not), and 0 bit (black and white 04) is set in the depth direction.
Gradation) Cd clear. 1. l! ni sentence? Indication dial 1G and frame display dial 17 are also shown in Figure 4 and O/'3 II.
1. lr)'<Same as Ripan'C2! -+C'+X
A memory erino' for 240 pixels is set, but in the depth direction, 1 pixel 1-(white/black 21ii') is set on both sides.
i key).

Now, the center temperature of C (C1-) is 35°0″O due to signal a.
1 (, 4[) J, C temperature width (1-W) /J'
3. If ζ is specified such as 00°C, the storage 1 degree range setting circuit 9 calculates C-'±T W,' 2 for 51 seconds) and reads out) formula selection circuit io'\lower limit temperature (33, 5°C)
and specify the upper limit temperature (36.5°C). The extraction selection circuit 101 selects all the pixels stored in picture 1 and picture 8 to output the specified temperature of 33.5°C or more and less than 36.5°C. 1 within a temperature range of ζ3°C
・Write the value in the 62nd step of -62 at the corresponding position of the image display meter 125. In addition, 'o'< black level) is marked on pixels of 33°5"C:6:I, and '63'" (white level) is marked with f'J' on pixels of 3G, 5°C or above. -j, and the 6/1 gradation is m x, the circuit for letters 30 t, A2 A based on the signal that specifies the center temperature stone and the temperature range.
- Controls the Uktashi 1 generator and displays the text 1
G's 256 x 24 C1 -1 part of 1G area rCT35, OTW 3. A pattern of letters and numerals OOJ is written in the form of 5 x 71 dora 1 hema 1 to likus in the form J shown in FIG. 4 in one row. Since it is only necessary to give the presence or absence of this platform and pattern, the memory I 6 +, ;L
It is enough to have 1 or more pits in the depth direction.

The image data and character pattern data written separately in the memories 12 and 16 in this way are stored in the counters 21 and 22.
The horizontal and vertical position designation signals from 'a1. : Same +11 J is shown in FIG. 2. .6, and the level shift circuits 1 to 14 have the following 4-11). On the screen of device 11 (JL
, IC[35, Oding W3. The letters OOj are warm■minutei5
j(1!) is displayed as shown in Figure 2 after being incremented by Z.

In the present invention, in this way, the temperature indicated by C is 1'' (f
, r In 11.1, a large scale is set in the left-right symmetry in Z and in the part d in T. For the pixels in the two areas j surrounded by the two areas, it is assumed that between the two B' Find the difference between the people's (Fl11 degree data) at the pixel iv located at a symmetrical position across the center line /υ, and display the bean distribution of the tlI (the temperature added to the α data). Therefore, the frame
! Easily determine the left-right symmetry of two regions
? It is characterized by having one pad included.

That is, the A verator first operates the frame setting circuits 24A, 2/l,
By manipulating B, place frames A and B with equal human figures at positions that should be left and right symmetrical in the temperature image Z.

At this time, the frame setting circuits 24A and 24-B determine the respective frames at the points Pa1. p a2. P a3. p a4.
P bl, p 112°P 113. p l)4
position data is generated and sent to the frame removal circuit 23. The frame aging circuit 23 is constructed according to the corresponding position;
15, the above four dots are connected in a straight line and connected/V frame pattern is written into the memory 17 as shown by A and B. The two frame patterns written in the memory 17 in this way are As mentioned above, both f((() data and character pattern data are read simultaneously in synchronization with the screen scanning of the display device 11, and are sent to the level shift circuits 1 to 14 via the OR circuit 18,
On the screen of the display device 11, frames A and B are displayed along with the temperature distribution (2÷) at the setting point 11, as shown in FIG.

When C frames A and B are set in this way, the frame j7 address setting circuit 25 is set by the frame setting circuit 24. ,A,2'1.
Based on the frame position data sent from +3, 11 pixels included in the area surrounded by frame △ and B in image Z (D al ~D an) < 1) bL-D
1u11) was relisted 1-up and restored 11
An address signal for sequentially reading out the horizontal data of each pixel from the image sensor 8 is generated and sent to the image sensor 8. For example, first pixel 1) al in frame A, then pixel #i in pixel 1]
1. ) l + 20, Toiu J, Urchin Between the two frames, there is a temporary 9 l/ko center line 1, which is in a symmetrical position 1
1:11 is one phase [? 1 read 1, read Da
The temperature data of L Db20 is stored in registers 26A and 2, respectively.
6B, and the difference between the data is determined by the subtraction circuit 27. The determined difference data is sent to the amplifier 28. After being subjected to appropriate processing by the bias circuit 29,
It is sent to the display memory 12. In the frame 12/\, an address signal specifying the pixel 1)al is sent from the frame address setting circuit 25, and the pixel [[
)al data is replaced with the above difference data.

In this way, once the processing for one silk pixel is completed,
The in-frame address signal setting circuit 2b reads the temperature data of the next one dark blue, for example, pixels Da2 and D111'll, and sends the original address signal to the memory 8. The temperature data of the pixels read out by the address signal are stored in the registers 26, respectively.
A, 26.8, and the difference data is stored in memory 12.
is written to the position of pixel [)a2 within. Thereafter, in exactly the same manner, the temperature data of the symmetrical pixels of n pixels in the frames Δ and B are sequentially read out.

(The data from klΔ is sent to the register 26A, and the data from frame B is sent to the register B and held once.The difference between the data for each set is sent to the subtraction circuit 27J,
The difference data is written to the corresponding location in the memory 12. This work involved folding the image of the area surrounded by frame B using the center line as a boundary, folding it over frame A, finding the difference hz between the two images, and writing it in frame A. Covers the equivalent of Therefore, if the temperature distribution in the area surrounded by frame A and frame B is positive and symmetrical, the output of the subtraction circuit 27 will always be zero, and the frame in the image displayed on the screen of the display device 11 will be Inside A should be uniform with no temperature change and have a constant brightness or hue depending on the bias value given by the bias circuit 29. If there is a part where some temperature change has occurred, the temperature of that part It appears that the temperature distribution is not symmetrical, and it is possible to determine that there is some kind of abnormality in that area.

[Effect] Therefore, whether or not the temperature IJ of the area defined by the two (4-) set in the image of the subject Iho is symmetrical, and The extent to which the distribution differs from side to side can be seen at a glance by observing the pattern within frame A.

As described in detail above, according to the present invention, it is possible to immediately know the left-right symmetry of the temperature distribution of two areas set on a subject from the pattern of the difference between the two areas.

[Modification] It goes without saying that the difference pattern may be displayed within the frame 13 or may be displayed on a display means separate from the display device 11.

Moreover, in the above-mentioned embodiment', L! ! ! In order to simplify the solution, we have illustrated a device composed of individual blocks, but in reality it includes a frame writing circuit 23, frame setting circuits 24A, 241, frame address setting circuit 25, registers 26A, 26B, and subtraction. It is possible to replace the functions of the circuit 27, the amplifier 28, the two bias circuits, the temperature range setting circuit 9, etc. with a computer, and it is more practical to use one memory for both the memory 16 and the memory 17. ·be.

Further, in the above-described embodiment, the area is designated by a rectangular frame, but the frame may be selected in any shape. However, in order to find the difference pattern between the two areas, the two frames need to be symmetrical with respect to the center line.

Further, if only one frame setting circuit is provided and the set frame is slid vertically and/or horizontally to set another frame, the frame setting becomes easy.

Furthermore, in the above embodiment, two frames are set in one image, but the same applies to two images obtained by photographing two symmetrical areas set on the subject one by one. It goes without saying that it is possible to go through the process of

Figure 1 shows the configuration of one embodiment of A\Komyo, Figure 2 shows the display state of the screen, and Figure 3 shows the contents of the memory 8 in the rain. Figures 1, 4, and 5 are diagrams for explaining the storage areas in the memory 16, 17, according to the pixel arrangement.

8: Image memory 9: Humidity 1 range setting circuit 10: Read selection circuit 11: Cathode ray tube display device δ′ for monitor 12: Image display memory 13:1)-A converter 14. Knee level shift 1~circuit 15: Rarepi signal conversion circuit 16; Character display memory 17: Frame display memory 18: OR circuit 19: Synchronization signal generation circuit 20: Pixel L” Tsuku oscillator 21.22: Counter 23: Frame pile circuit 2.1△, 24B: Frame setting circuit 2 []: Address setting circuit to 71 in the frame 26△, 2613: Resistor 27; pull circuit 28; amplifier 20: High nose circuit 1-'100'F applicant Nippon Suiden 1' (S5 type meeting [ Representative name 9 Fuji - person

Claims (2)

[Claims] (1) Detecting infrared rays from the subject and storing temperature data of at least two areas with the same shape and area;
Find the axes of the temperature 1σ data for each pixel located at a symmetrical position across the center line imagined between the above 2' regions,
A method for determining wetness, which is characterized by displaying a temperature distribution image based on the obtained differential humidity data. (2) Obtained by detecting infrared rays from the subject. means for storing temperature data of pixels constituting the visual field; a means for reading out the humidity data recorded in the storage means; Il
Display means for displaying an image; means for specifying at least two areas having the same shape and area on the screen of the stage indicated by =j, Q; means for reading temperature data of included pixels from the storage means; , the means for determining the difference in temperature data of people, and the value I
1. A temperature distribution measuring device characterized by displaying an image based on the data of the difference obtained.