Feature extracting method, subject recognizing method and image processing apparatus
First Claim
1. A feature extracting method for a radiation image formed by radiation image signals each corresponding to an amount of radiation that has passed through a radiographed subject, said method comprising:
- a plurality of different feature extracting steps, each of which has a respective feature extracting condition to extract a respective feature value so that a plurality of different feature values are extracted from the radiation image by the plurality of different feature extracting steps;
a feature value evaluating step of evaluating a combination of the plurality of different feature values extracted by the plurality of different feature extracting steps; and
a controlling step of;
selecting at least one feature extracting step from the plurality of different feature extracting steps based on an evaluation result by the feature value evaluating step, changing the feature extracting condition of the selected feature extracting step, and conducting the selected feature extracting step again so as to extract from the radiation image a feature value based on the changed feature extracting condition;
wherein the controlling step includes investigating the coordination of the combination of the plurality of different feature values, and when it is judged in the controlling step that the combination of the plurality of different feature values is not coordinated, the feature value to be extracted again is selected based on the uncoordinated combination of the plurality of different feature values and conducts the selected feature extracting step again.
1 Assignment
0 Petitions
Accused Products
Abstract
A feature extracting method for a radiation image formed by radiation image signals each corresponding to an amount of radiation having passed through a radiographed subject, has plural different feature extracting steps, each of the plural different feature extracting steps having a respective feature extracting condition to extract a respective feature value; a feature value evaluating step of evaluating a combination of the plural different feature values; and a controlling step of selecting at least one feature extracting step from the plural different feature extracting steps based on an evaluation result by the feature value evaluating step, changing the feature extracting condition of the selected feature extracting step and conducting the selected feature extracting step so as to extract a feature value again based on the changed feature extracting condition from the radiation image.
22 Citations
22 Claims
-
1. A feature extracting method for a radiation image formed by radiation image signals each corresponding to an amount of radiation that has passed through a radiographed subject, said method comprising:
-
a plurality of different feature extracting steps, each of which has a respective feature extracting condition to extract a respective feature value so that a plurality of different feature values are extracted from the radiation image by the plurality of different feature extracting steps; a feature value evaluating step of evaluating a combination of the plurality of different feature values extracted by the plurality of different feature extracting steps; and a controlling step of;
selecting at least one feature extracting step from the plurality of different feature extracting steps based on an evaluation result by the feature value evaluating step, changing the feature extracting condition of the selected feature extracting step, and conducting the selected feature extracting step again so as to extract from the radiation image a feature value based on the changed feature extracting condition;wherein the controlling step includes investigating the coordination of the combination of the plurality of different feature values, and when it is judged in the controlling step that the combination of the plurality of different feature values is not coordinated, the feature value to be extracted again is selected based on the uncoordinated combination of the plurality of different feature values and conducts the selected feature extracting step again. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method of recognizing a subject from a radiation image formed by radiation image signals each corresponding to an amount of radiation that has passed through a radiographed subject, said method comprising:
-
a plurality of different feature extracting steps, each of which has a respective feature extracting condition to extract a respective feature value so that a plurality of different feature values are extracted from the radiation image by the plurality of different feature extracting steps; a feature value evaluating step of evaluating a combination of the plurality of different feature values extracted by the plurality of different feature extracting steps; a controlling step of;
selecting at least one feature extracting step from the plurality of different feature extracting steps based on an evaluation result by the feature value evaluating step, changing the feature extracting condition of the selected feature extracting step, and conducting the selected feature extracting step again so as to extract from the radiation image a feature value based on the changed feature extracting condition; anda recognizing step of recognizing a radiographing orientation and a radiographed part of the subject on the radiation image by using the plurality of different feature values; wherein the controlling step includes investigating the coordination of the combination of the plurality of different feature values, and when it is judged in the controlling step that the combination of the plurality of different feature values is not coordinated, the feature value to be extracted again is selected based on the uncoordinated combination of the plurality of different feature values and conducts the selected feature extracting step again. - View Dependent Claims (10, 11)
-
-
12. A computer system for conducting a feature extracting method for a radiation image formed by radiation image signals each corresponding to an amount of radiation that has passed through a radiographed subject, the computer system including a program that is executable by the computer system to cause the computer system to execute functions comprising:
-
a plurality of different feature extracting steps, each of which has a respective feature extracting condition to extract a respective feature value so that a plurality of different feature values are extracted from the radiation image by the plurality of different feature extracting steps; a feature value evaluating step of evaluating a combination of the plurality of different feature values extracted by the plurality of different feature extracting steps; and a controlling step of;
selecting at least one feature extracting step from the plurality of different feature extracting steps based on an evaluation result by the feature value evaluating step, changing the feature extracting condition of the selected feature extracting step, and conducting the selected feature extracting step again so as to extract from the radiation image a feature value based on the changed feature extracting condition;wherein the controlling step includes investigating the coordination of the combination of the plurality of different feature values, and when it is judged in the controlling step that the combination of the plurality of different feature values is not coordinated, the feature value to be extracted again is selected based on the uncoordinated combination of the plurality of different feature values and conducts the selected feature extracting step again. - View Dependent Claims (13, 14)
-
-
15. An image processing apparatus for processing a radiation image formed by radiation image signals each corresponding to an amount of radiation having that has passed through a radiographed subject, said apparatus comprising:
-
a plurality of different feature extracting sections, each of which has a respective feature extracting condition to extract a respective feature value so that a plurality of different feature values are extracted from the radiation image by the plurality of different feature extracting sections; a feature value evaluating section to evaluate a combination of the plurality of different feature values extracted by the plurality of different feature extracting sections; and a controlling section to select at least one feature extracting section from the plurality of different feature extracting sections based on an evaluation result by the feature value evaluating section, to change the feature extracting condition of the selected feature extracting section, and to control the selected feature extracting section so as to extract from the radiation image a feature value again based on the changed feature extracting condition; wherein the controlling section investigates the coordination of the combination of the plurality of different feature values and when the controlling section judges that the combination of the plurality of different feature values is not coordinated, the controlling section selects the feature value to be extracted again based on the uncoordinated combination of the plurality of different feature values and controls the selected feature extracting section to select the selected feature value again. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
Specification