Image display apparatus, image-taking apparatus and image display method

An image display apparatus comprising:

• an image-taking element that converts an optical image into an image signal;
• a display that displays a display image based on the image signal;
• and
• one or more processors configured to
• detect a face included in the image signal according to a face evaluation value indicating a feature of the face;
• generate frame display information including face evaluation value information indicating whether a frame line is to be displayed surrounding the detected face;
• control the display to display a frame line around the detected face based on the generated frame display information;
• identify a same detected face corresponding to a same person as a previously detected face, the previously detected face being a face detected before a current face detecting process, the face evaluation value of the previously detected face being still available to the one or more processors;
• control the display to erase, for the detected face identified as the same detected face, the frame line with a lapse of time;
• and
• repeat the face detecting process.