Patent ID: 8233665

Claim:
An image measuring apparatus comprising: an imaging unit disposed facing a stage for placing the measurement object and configured to acquire an image of a measurement object; a displaying unit configured to display the image of the measurement object acquired in the imaging unit; a feature image specification receiving unit configured to receive specification of any partial image on the displayed image as a feature image; a measurement position specification receiving unit configured to receive specification of a measurement position of the measurement object, on the displayed image; a relative position storing unit configured to store the feature image the specification of which is received in the feature image specification receiving unit, and information on a relative position for the feature image, the information representing the measurement position the specification of which is received in the measurement position specification receiving unit and a display position for displaying a dimension line indicating the measurement position; an attitude and position identifying unit configured to compare an image of the measurement object, the image being newly acquired by the imaging unit, with the stored feature image to identify information on an attitude and a position of the newly acquired image of the measurement object; an edge portion detecting unit configured to set a measurement position for the image of the measurement object, the image having the attitude and the position identified, based on the information on the relative position of the measurement position for the feature image, the information being stored in the relative position storing unit, and to detect an edge portion at the measurement position; a measuring unit configured to measure a predetermined physical quantity based on the detected edge portion; and a measurement result displaying unit configured to display the dimension line indicating the measurement position and a measurement result at a predetermined position based on the information on the relative position for the feature image stored in the relative position storing unit, the information representing the display position of the dimension line, and further comprising a display manner changing unit configured to change a display manner of the measurement result; and wherein the display manner changing unit is configured to change the display manner of the measurement result if it is determined that the measurement result is within the range of the predetermined tolerance.