Instrumentation endoscope apparatus
View Patent ↗A reference point-designating section 18 b designates two reference points on a measurement object. A reference curve-calculating section 18 c calculates a reference curve calculated by approximating an outline of the measurement object based on the reference points. A loss-composing point-calculating section 18 d calculates loss-composing points constituting a loss outline formed on the measurement object based on the reference points and the reference curve. A loss size-calculating section 18 f measures loss size based on the loss-composing points. Designating two reference points enables loss size measurement, thereby reducing complex operation and improving operability.
1. An endoscope apparatus comprising:
an electronic endoscope for capturing a measurement object and producing a picked-up image signal;
an image-processing unit for producing an image signal based on the picked-up image signal; and
a measurement processing unit for conducting a measurement processing on the measurement object based on the image signal,
wherein the measurement processing unit comprises:
a reference point-designating unit for designating two reference points on the measurement object;
a loss-composing points-calculating unit for calculating loss-composing points that constitute a loss outline formed on the measurement object based on the two reference points;
a loss-measurement unit for measuring a loss size based on the loss-composing points; and
an approximate-outline-calculating unit for calculating two approximate outlines calculated by approximating an outline of the measurement object based on the two reference points;
wherein the loss-composing points-calculating unit calculates the loss-composing points based on the two reference points and the two approximate outlines; and
wherein the reference point-designating unit designates end points as the two reference points on cross-points between the outline of the measurement object and the loss outline.
2. The endoscope apparatus according to claim 1 , wherein the approximate-outline-calculating unit calculates the two approximate outlines of the measurement object by correcting distortion in an image-pickup optical system disposed at a distal end of the electronic endoscope.
3. The endoscope apparatus according to claim 1 , further comprising a loss-type-identifying unit for identifying a loss type based on an angle defined by the two approximate outlines corresponding to the two reference points, wherein the loss type is a type of damage to the measurement object.
4. The endoscope apparatus according to claim 3 , wherein the loss-measurement unit calculates a parameter indicative of the loss size corresponding to the loss type.
5. The endoscope apparatus according to claim 1 , wherein the loss-composing points-calculating unit calculates one of the loss-composing points which indicates a cross-point between the two approximate outlines corresponding to the two reference points, when the two approximate outlines are generated along two outlines of the measurement object around a corner of the measurement object based on the two reference points generated on the two outlines of the measurement object around the corner.
6. The endoscope apparatus according to claim 1 , wherein the loss-measurement unit calculates two parameter types indicative of the loss size.
7. The endoscope apparatus according to claim 1 , wherein the approximate-outline-calculating unit calculates at least two characteristic points on the outline of the measurement object disposed around one of the reference points and calculates the two approximate outlines based on at least the two characteristic points.
8. The endoscope apparatus according to claim 1 , wherein the loss-composing points-calculating unit calculates the loss-composing points in two directions from one of the reference points to the other one of the reference points.