JP2575523B2 - Real-time calculation result display method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] The present invention relates to a real-time calculation result display method, and more particularly, to a method for displaying a calculation result based on a predetermined real-time parameter input as a numerical value, a graph, an image, or the like. The present invention relates to a real-time calculation result display method in which various devices such as a measuring instrument, a control panel, a CAD, a CG, and a medical image display device are used when displaying by appropriately using.

[Prior Art] FIG. 3 is a block diagram showing a conventional general real-time calculation result display method. What is illustrated in FIG. 3 is a real-time dose distribution calculation and display mechanism in the radiation treatment planning apparatus. In FIG. 3, reference numeral (1) denotes a displacement input device, which comprises a trackball or a rotary switch provided with a required potentiometer for converting the movement of the operator's hand with respect to the mechanism into a corresponding electric signal. Things. (2) is a main processing unit, which comprises a digital computer having a required scale. (3) is a high-speed arithmetic unit, which is composed of an array processor and the like, and executes a required dose distribution operation at a high speed. (4) an image memory for storing the calculation result of the dose distribution in the high-speed calculation device (3) in order to display it with a desired image. (5) is a character display CRT, (6)
Are keyboards, each of which functions as a required man-machine interface with an operator. And (7) is a graphic
A CRT for displaying the contents of the image memory (4) on its screen.

FIG. 4 is a flowchart for explaining the operation of the conventional example.

Next, the operation of the above conventional example will be described with reference to FIGS.
Description will be made with reference to the drawings as appropriate.

First, in the first step (S400), the operation of the real-time dose distribution calculation and display mechanism is started by pressing an appropriate start key (not shown) or the like.

In the next step (S401), predetermined operation conditions (operation matrix, operation accuracy, operation time, etc.) are given by the operator through the character display CRT (5) and the keyboard (6) as a man-machine interface.
Then, for example, either the high-precision operation or the simple operation is selected as the operation accuracy. Subsequent steps (S4
In 02), it is determined whether or not a high-precision operation has been selected. If the result of this determination is YES, a displacement amount is input in step (S408),
Following this, the conversion from the displacement to the calculation parameter (S4
09), a calculation based on a predetermined high-precision formula (S410) and a display of the calculation result (S411) are sequentially performed. The operation from step (S408) to step (S411) is performed as follows. That is, when a predetermined displacement amount is inputted by the operator from the displacement amount input device (1), the inputted displacement amount is converted into a proper treatment parameter (for example, by the following main processing unit (2)). (Therapeutic unit body angle, irradiation field shape, shielding block shape, etc.). The character display CR as a man-machine interface connected to the main processing unit (2)
Predetermined calculation conditions (calculation matrix, calculation accuracy, calculation time, etc.) are given in advance by the operator via T (5) and the keyboard (6). In the high-speed arithmetic device (3) following this, a required arithmetic operation is performed using a predetermined dose distribution arithmetic expression (here, a high-precision expression) based on the above arithmetic conditions. The dose distribution data obtained as a result of this calculation is stored in the next image memory (4).
Is stored in By executing such operations in real time, the dose distribution based on the predetermined parameters is displayed on the graphic CRT (7). Then, after this display is made, the process returns to the initial step (S401).

On the other hand, when the result of the determination in step (S402) is NO, a displacement amount is input in step (S403), followed by conversion of the displacement amount into a calculation parameter (S404), and (S405) based on the simplified formula (1) and the display of the calculation result (S406) are sequentially performed. Then, in the step (S407) following this, it is determined whether or not the real-time processing has been completed. When the result of this determination is NO, step (S403)
And the subsequent processing is repeated. On the other hand, when the result of the determination in the step (S407) is YES, the process returns to the first step (S401). Here, from step (S403) to step (S406)
The operations up to are the same as the above-described operations from step (S408) to step (S411) except for the calculation using the simplified formula, and therefore detailed description thereof will be omitted.

[Problem to be Solved by the Invention] This type of conventional real-time operation result display method has the above-described configuration, and the operation conditions are set in advance by an operator, and a predetermined displacement A real-time (calculation) display based on the quantity input is performed.
By the way, in the conventional method of this kind, usually, real-time (operation) display is performed using a high-speed but low-accuracy (in other words, an operation matrix is small) display, while the operator is required to reduce the input displacement amount. The optimum parameters are searched for while appropriately changing. Thereafter, real-time (computation) display is performed using a high-precision formula (in other words, a large number of computation matrices) using the searched optimal parameters. For this reason, there is a problem that the operation for optimizing the treatment parameters under the condition of high accuracy (in other words, a large number of operation matrices) that is really required by the operator is extremely complicated. Was.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described various problems, and does not require complicated operations for switching the calculation conditions. It is an object of the present invention to obtain a real-time calculation result display method that can optimize treatment parameters under conditions of high accuracy (in other words, a large number of calculation matrices).

[Means for Solving the Problems] A real-time calculation result display method according to the present invention uses a displacement input device for inputting a displacement and a high-speed calculation device based on a stored calculation parameter. Performs a high-precision operation based on the high-precision equation, writes the high-precision operation result to an image memory and displays the result on a graphic display device.Performs a regular task process. An interrupt process is started at a constant cycle, and when there is no change in the input displacement amount by the displacement input device, the interrupt process is terminated and the task process is continued, and the input displacement by the displacement input device is When there is a change in the amount, the task processing is stopped, the input displacement amount is converted into an operation parameter and stored, and based on the operation parameter, the high-speed operation device performs an operation. A main operation unit that performs a simple operation based on a fixed simple expression, writes the result of the simple operation in the image memory, displays the result on the graphic display device, and then restarts the stopped task processing. It is.

[Operation] In the present invention, the displacement amount is input by the displacement amount input device. Also, depending on the main processing unit, usually
Based on the stored calculation parameters, a high-speed calculation device performs high-precision calculation based on a predetermined high-precision formula, and the high-precision calculation result is written to an image memory and displayed on a graphic display device. Task processing is executed, and during the execution of the task processing, an interrupt processing is started at a fixed cycle by a timer, and when there is no change in the input displacement amount by the displacement input device, the interrupt processing is terminated. And the task processing is continued, and when there is a change in the input displacement amount by the displacement amount input device, the task processing is stopped, the input displacement amount is converted into an operation parameter and stored, and the operation parameter is stored in the operation parameter. On the basis of,
A simple operation based on a predetermined simple expression is performed by the high-speed operation device, and the result of the simple operation is written to the image memory and displayed on the graphic display device,
Thereafter, the stopped task processing is restarted.

[Embodiment] FIG. 1 is a block diagram showing a method of displaying a real-time operation result according to an embodiment of the present invention. In FIG. 1, reference numeral (1) denotes a displacement input device, which comprises a trackball or a rotary switch provided with a required potentiometer for converting the movement of an operator's hand with respect to the mechanism into a corresponding electric signal. Things. (2A) is a main processing unit, which comprises a digital computer having a required scale. (3) is a high-speed arithmetic unit, which is composed of an array processor and the like, and executes a required dose distribution operation at a high speed. (4) an image memory for storing the calculation result of the dose distribution in the high-speed calculation device (3) in order to display it with a desired image. (5) is a character display CRT, and (6) is a keyboard, each of which functions as a required man-machine interface with an operator. And (7)
Is a graphic CRT and image memory (4)
Is displayed on the screen.

FIG. 2 is a flowchart for explaining the operation of the above embodiment. In FIG. 2, FIG. 2 (A) is a flowchart for explaining a predetermined interrupt process, and FIG. 2 (B) is a flowchart for explaining a predetermined task process. It is.

Next, the operation of the above embodiment will be described with reference to FIGS.
Description will be made with reference to the drawings as appropriate.

Now, it is assumed that the normal operation is being continued in the above embodiment. At this time, the above-described embodiment performs a high-precision calculation / display operation, and an appropriate built-in timer (not shown) performs an interrupt process at a constant cycle. Hereinafter, this interrupt processing will be described mainly with reference to FIG. 2 (A). First, in step (S21), an interrupt is started by an appropriate timer as described above. In the next step (S22), a predetermined displacement is input from the displacement input device (1). Then, in the step (S23) following this, it is determined whether or not the input displacement amount has changed. If the result of this determination is NO, the process skips to step (S29) and the interrupt process ends. That is,
At this time, a steady high-precision calculation / display operation is continued.

On the other hand, when the result of the determination in step (S23) is YES, the process moves to step (S24),
The continuation of the steady high-precision calculation / display operation is stopped.
That is, the execution of the task for high-accuracy calculation / display is stopped. In the subsequent step (S25), the input displacement amount is converted into a corresponding calculation parameter, and stored in an appropriate storage means (not shown) for use in a later high-precision calculation / display operation. Will be saved. In the next step (S26), a calculation is performed by the high-speed calculation device (3) using a predetermined simple formula. Then, in the subsequent step S27), the result of the previous operation is written to the image memory (4). Note that this writing is performed by overwriting data that has been previously written. Further, in this step (S27), a new image is displayed on the graphic CRT (7). Then, in the step (S28) following this, the task for the high-accuracy calculation / display operation is restarted.

Next, the execution of this task will be described mainly with reference to FIG. 2 (B). First, step (T21)
There is a task start at, followed by reading of the stored parameters (T2
2), a high-precision operation is performed using these parameters (T23). The result of the calculation is displayed by using the image memory (4) and the graphic CRT (7).

In addition, since the high-precision calculation here takes a long processing time, if there is a change in the displacement input from the displacement input device (1) during the calculation / display, FIG.
Due to the operation from step (S24) to step (S28) in, the execution of the high-precision calculation is interrupted. Then, after an appropriate time has elapsed, the high-precision calculation based on the changed displacement amount is restarted.

In the above embodiment, a trackball or a rotary switch can be used as the displacement input device. Alternatively, a mouse, a digitizer, or a joystick can be used.

Further, although a graphic CRT is exemplified as the display device, the present invention is not limited to this, and any desired device such as an LCD, an EL, and a plasma display can be used.

Further, although the above-described embodiment takes the radiation treatment planning apparatus as an example, the display of the calculation result is represented by numerical values, graphs,
A similar function and effect can be obtained in a means capable of displaying an image or the like in an arbitrary manner in real time, for example, various measuring instruments, control panels, CAD, CG, medical image display devices, and the like.

Also, various control function units of the present invention, such as detection of a change in the amount of input displacement, can be realized by a hardware configuration including an appropriate electric circuit.

Further, as for the contents of the calculation in the method of the present invention, real-time image processing such as real-time zoom, rotation, and cross-section reconstruction, spectrum display in various measuring instruments, and the like can be considered.

[Effects of the Invention] As described above, the real-time calculation result display method according to the present invention uses a displacement input device for inputting a displacement and a high-speed calculation device based on stored calculation parameters. Perform high-precision calculations based on a predetermined high-precision formula,
Writing the high-precision operation result to an image memory and displaying it on a graphic display device, performing a regular task process, and during the task process, starting an interrupt process at a constant cycle by a timer, When there is no change in the input displacement amount by the displacement amount input device, the interrupt process is terminated and the task process is continued, and when there is a change in the input displacement amount by the displacement amount input device, the task process is executed. Stopping, converting the input displacement amount into a calculation parameter and storing it, performing a simple calculation based on a predetermined simple formula by the high-speed calculation device based on the calculation parameter, and storing the simple calculation result in the image memory And a main processing unit for displaying the data on the graphic display device and then restarting the stopped task processing. In those A configuration, as can be easily performed switching of operation conditions, effect of high accuracy can be obtained at low cost are obtained if.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a method for displaying a real-time operation result according to one embodiment of the present invention, FIG. 2 is a flowchart for explaining the operation of the above-described embodiment, and FIG. FIG. 4 is a block diagram showing a general real-time calculation result display method, and FIG. 4 is a flowchart for explaining the operation of the above-mentioned conventional example method. (1) is a displacement input device, (2) and (2A) are main processors, (3) is a high-speed processor, (4) is an image memory, (5) is a character display CRT, and (6) is a keyboard. (7) Graphic CRT. In the drawings, the same reference numerals denote the same or corresponding components.

Claims (1)

(57) [Claims] A displacement input device for inputting a displacement amount; and a high-speed operation device for performing a high-precision operation based on a predetermined high-precision formula based on the stored operation parameters. Performing a regular task process for writing the result to an image memory and displaying the result on a graphic display device; while executing the task process, an interrupt process is started at a fixed cycle by a timer; When there is no change in the input displacement amount due to, the interrupt processing is terminated and the task processing is continued.When there is a change in the input displacement amount by the displacement amount input device, the task processing is stopped, The input displacement is converted into a calculation parameter and stored, and based on the calculation parameter, a simple calculation is performed by the high-speed calculation device based on a predetermined simple formula, and the simple calculation result is obtained. Serial writing in the image memory is displayed on the graphic display device, then real-time calculation result display method, characterized in that said a restart main processing unit to stop the task processing.