JP3044136U - Object density imager - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To express the density of an object by using a diagram giving an analog image, and to make a viewer catch the density by directly making a relative comparison with the same density. SOLUTION: A cylindrical object is placed on a computer graphic in a direction in which a stepwise cross section 2 can be seen (see the sketch drawing 1 in which the cylindrical object is placed in FIG. 1), and the radial array points are arranged on the same cross section 2 in a circumferential direction. By arranging group 3, the point density by the distributed points is expressed to achieve the task. At this time, regarding the angle p formed by the adjacent radial point groups and the distance s between the adjacent points of the same point group, the arbitrary expression to be displayed by establishing the relations of Formula 1 and Formula 2 in claim 3. A point density map in which points are distributed at a density proportional to the density is realized. The input density display figures B1 and B2 are replaced with the reference density display figures A1 and A2.
Displaying them side by side makes it possible to intuitively understand the density of the object based on a relative sense.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a method of expressing the density of an object by using a computer graphic and an analog image. In particular, it is highly useful in the use of personal computers, which emphasizes modern so-called objective thinking.

[0002]

[Prior art]

 In the era of computer utilization by so-called objective thinking, this method has not been used for displaying the density of objects on computer graphics.

[0003]

[Problems to be solved by the device]

 In the density display of an object by the conventional technology, the density is expressed numerically, and it is merely a quantitative position on the graph. Therefore, there was no method to directly and intuitively capture this.

An object of the present invention is not only to express the density numerically in displaying the density of an object, but also to capture it in a form that directly appeals to the senses.

[Means for Solving the Problems]

 The present invention is to display the density of an object using the density of points drawn on a computer graphic to achieve the above object.

Then, as one of the above-mentioned display methods, by using a figure in which a stepwise cross-section is exposed with an object having a columnar shape, the points arranged in a radial pattern over the entire circumference are drawn on the same cross-section. A method of expressing the density of an object is used. At this time, a figure of the same form at the reference density was drawn side by side, and this figure and the figure of the previous density of interest were arranged side by side on the same screen and compared to show the same density.

As another display method described above, a scale corresponding to the density value is attached to the horizontal axis like a scale, and the points are distributed within a certain width at a density proportional to the value of the scale. Then, after drawing, use a format that shows where the target density falls on the same scale. By making this display, the density of the object is expressed as a measure that continuously changes along the scale with the density of the points that are distributed, and the position where the target density corresponds to that measure is illustrated. it can.

[0007]

[Embodiment of the invention]

 An embodiment of the invention will be described with reference to the drawings. 1 and 3 are both actual printout outputs in computer graphics according to the computer program of claim 1, of which FIG. 1 is according to the contents of claims 1 to 4, FIG. 3 is based on the contents of claims 1 and 5. Further, FIG. 2 is an explanatory diagram relating to claim 3.

In the computer graphic according to the computer program of the first aspect, the density of the object is expressed as the density of the distributed points that are drawn in the computer graphic.

In the computer graphic according to the second aspect of the present invention, a three-dimensional image in which the stepwise cross section 2 of the object is exposed is drawn, and then the density is expressed in the same cross section.

In the computer graphic according to a third aspect, a radial array point group 3 arranged so as to satisfy the equations 1 and 2 on the stepwise cross section 2 of the object according to the second aspect is arranged over the entire circumference. The density is expressed by doing. The density of this point group is depicted with a value proportional to the actual input density.

In the computer graphic according to claim 4, reference density display figures A1 and A2 displaying a plurality of reference densities such as average density and minimum density, and one or more target input density display The figures B1 and B2 are arranged side by side on the same screen. At this time, the number of reference density display graphics and input density display graphics on the screen is not limited.

In the computer graphic according to claim 5, on the horizontal axis with the density value scale 5 which means the taper scale 4 in FIG. 3, on the horizontal axis, that is, in proportion to the numerical value of the scale. Then, the density that changes is drawn as the density of the point group at the same portion, and the position of the target input density value is shown in the figure with the pointer 6.

[0013]

[Effect of the invention]

 Since the present invention is configured as described above, the following effects can be obtained.

In the computer system according to the first aspect of the present invention, the density of the object can be shown not only as a numerical value but also as a figure in which the density of characters can be actually felt.

In the computer system according to the second aspect, since the stepwise cross-sectional display is performed, the density of the object can be captured with a three-dimensional sense.

In the computer system according to the third aspect, not only the density of the object is shown, but the texture of the cross section of the object can be well expressed. It is the coefficients α and ω in the equations (1) and (2) that provide this function. The coefficients α and ω are constants determined for each object for which the internal density is to be expressed. For example, in a long bone of a human bone where there is no space, the radiation length r described in claim 3 is calculated. When it is defined as 50 dots on the data graphic screen, 0.08 to 0. The values are about 09 and 1.5 to 1.9. This makes it possible to express the texture of the same part well. In fact, the respective values in this example are 0.085 and 1.7, and it can be seen that the structure and texture of the bone substance are realistically depicted.

In the computer system according to the fourth aspect, since the target input density display figure (one or more) is displayed side by side on the same screen as the plurality of reference density display figures, the input density display figure can be compared. It is possible to accurately and intuitively grasp the positioning of the.

In the computer system according to the fifth aspect of the present invention, it is possible to grasp the position of the target density on the diagram representing the continuous density change by actually recognizing the character.

(Equation 1)

(Equation 2)

[Brief description of the drawings]

FIG. 1 is a display diagram in the case of a “bone density cross-section display diagram” which is an example created by carrying out claims 1 to 4. It represents the density of the unmyelinated cavity of the long bone. Input bone density 1mmA
Two input bone density display figures (No. 1 and No. 2), which are output diagrams for 1 and 5 mmA1 (mmA1 is a unit according to the DIP method), have a maximum average bone density of 2.91 mmA1.
FIG. 3 is a bone density display diagram in which two reference bone density display figures (No. 1 and No. 2), which are output diagrams for the minimum limit bone density of 1.90 mmA1, are arranged side by side on the same screen.

FIG. 2 is an explanatory diagram for the numbers 1 and 2 in claim 3;

FIG. 3 shows a “bone density meter” which is an example in which claims 1 and 5 are implemented, and the input bone density is 2 mmA1 (mm
A1 is an output example of a unit according to the DIP method.

[Explanation of symbols]

 A1, A2 Reference density display figure (1st, 2nd) B1, B2 Input density display figure (1st, 2nd) p Radial angle r Radiation length s Radiation interpoint distance 1 A cylindrical object was placed Floor plan 2 Stepwise section 3 Radial array point group 4 Scale 5 Density scale 6 Guide

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[Procedure amendment]

[Submission date] December 4, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims for utility model registration

[Correction method] Change

[Correction contents]

[Utility model registration claims]

Claims (5)

[Utility model registration claims] 1. An object, such as a bone, whose density has a value determined for each individual is displayed by using the given density on the screen represented by computer graphics. A computer program to do. 2. Displaying a sketch (1) in which a cylindrical object is placed in the direction in which the stepwise section (2) of the object can be seen, and then displaying the density of the object in the stepwise section (2). The computer program as claimed in claim 1. 3. The density d of the object is expressed as a set on a computer graphic over the entire circumference of a radial array point group (3) in which points are arranged in a radial pattern at equal intervals, and an angle formed by adjacent radiations. Is p radian, and the length of one ray and the distance between adjacent points on the ray are r and s, respectively, where p and s are values satisfying Equation 1 and Equation 2, respectively. The computer program of claim 2, wherein the computer program is arranged. However, the number 1
And α and ω in Equation 2 are coefficients determined by each object whose density is to be expressed. 4. One or more input density display figures (B1, B2) and a plurality of reference density display figures (A1, A2) are arranged side by side on the same screen on a computer graphic, and the former is compared with the latter. The computer program according to claim 3, wherein the computer program is intended to make the user realize the positioning of the target input density in a visual form. The number of input density display graphics and reference density display graphics on the screen is not limited as long as they fit on one screen. 5. A computer graphic is used to represent the density of an object by showing the density of points that are continuously varied along a scale (4), and has a certain width like a measure. The computer program according to claim 1, wherein, as represented by the strip-like form, the position (6) on which the input density corresponds to the scale (4) provided with the density scale (5) is illustrated.