Electronic apparatus and face image display method

Abstract

According to one embodiment, a two-dimensional face thumbnail display area includes a plurality of face image display areas which are arranged in a matrix including a plurality of rows and a plurality of columns. A plurality of time zones each having the same time length, which are obtained by dividing a total time length of the video content data by a number of the plurality of columns at equal intervals, are allocated to the plurality of columns, respectively. A face image list display process unit displays, based on time stamp information corresponding to each of the face images, face images, which belong to the time zone allocated to each column, on the same number of face image display areas of each column as the number of rows, by arranging the face images in an order of time of appearance of the face images.

1 . An electronic apparatus comprising:
 a face image extraction unit configured to extract face images of persons from a plurality of frames which constitute video content data, and to output time stamp information indicative of time points at which the extracted face images appear; and   a face image list display process unit configured to display a list of the extracted face images on a two-dimensional display area,   wherein the two-dimensional display area includes a plurality of face image display areas which are arranged in a matrix including a plurality of rows and a plurality of columns, a plurality of time zones each having the same time length, which are obtained by dividing a total time length of the video content data by the number of the plurality of columns at equal intervals, are allocated to the plurality of columns, respectively, and the face image list display process unit is configured to display, based on the time stamp information corresponding to each of the extracted face images, the face images, which belong to the time zone allocated to each column, on the face image display areas of each column, by arranging the face images in an order of time of appearance of the face images.   
   
   
       2 . The electronic apparatus according to  claim 1 , wherein the face image list display process unit is configured to select, based on the time stamp information corresponding to each of the extracted face images, the same number of face images as the number of rows from the face images which belong to the time zone allocated to the column that is an object of a display process, and to display the same number of selected face images as the number of rows on the face image display areas in the column that is the object of the display process, by arranging the face images in the order of time of appearance of the face images. 
   
   
       3 . The electronic apparatus according to  claim 2 , wherein in a case where the number of face images belonging to the time zone, which is allocated to the column that is the object of the display process, is larger than the number of rows, the face image list display process unit preferentially selects, from the face images belonging to the time zone allocated to the column that is the object of the display process, face images with high frequency of appearance in this time zone. 
   
   
       4 . The electronic apparatus according to  claim 2 , wherein in a case where the number of face images belonging to the time zone, which is allocated to the column that is the object of the display process, is larger than the number of rows, the face image list display process unit preferentially selects, from the face images belonging to the time zone allocated to the column that is the object of the display process, face images with a large size. 
   
   
       5 . The electronic apparatus according to  claim 1 , wherein when an event of instructing a change of a size of each of the face image display areas is input, the face image list display process unit varies the number of rows and the number of columns included in the two dimensional display area in accordance with a changed size that is designated by the event, and varies the time zones that are allocated to the columns included in the two-dimensional display area based on the total time length of the video content data and the varied number of columns. 
   
   
       6 . The electronic apparatus according to  claim 1 , wherein the face image list display process unit displays a plurality of thumbnail images, which correspond to a plurality of frames extracted from the video content data at equal time intervals, on a thumbnail display area which is disposed on an upper side or a lower side of the two-dimensional display area, by arranging the thumbnail images in line, and selects, in a case where a certain thumbnail image on the thumbnail display area is designated by a user, that one of the plurality of columns in the two-dimensional display area, to which the time zone to which the designated thumbnail image belongs is allocated. 
   
   
       7 . The electronic apparatus according to  claim 1 , further comprising a playback process unit which starts, when an invent of instructing playback of the video content data is input in a state in which one of the face images displayed on the two-dimensional display area is selected, playback of the video content data, based on the time stamp information of the selected face image, from a time point which is a predetermined time before a time point at which the selected face image appears. 
   
   
       8 . A face image display method of displaying a list of face images of a person appearing in video content data, comprising:
 performing a face image extraction process of extracting face images of persons from a plurality of frames which constitute the video content data and outputting time stamp information indicative of time points at which the extracted face images appear; and   performing a face image list display process of displaying a list of faces images of a person, who appears in the video content data, on a two-dimensional display area by using the face images extracted by the face image extraction process,   wherein the two-dimensional display area includes a plurality of face image display areas which are arranged in a matrix including a plurality of rows and a plurality of columns, a plurality of time zones each having the same time length, which are obtained by dividing a total time length of the video content data by a number of the plurality of columns at equal intervals, are allocated to the plurality of columns, respectively, and the face image list display process includes displaying, based on the time stamp information corresponding to each of the extracted face images, the face images, which belong to the time zone allocated to each column, on the face image display areas of each column, by arranging the face images in an order of time of appearance of the face images.   
   
   
       9 . The face image display method according to  claim 8 , wherein the face image list display process includes varying, when an event of instructing a change of a size of each of the face image display areas is input, the number of rows and the number of columns included in the two-dimensional display area in accordance with a changed size that is designated by the event, and varying the time zones that are allocated to the columns included in the two-dimensional display area on the basis of the total time length of the video content data and the varied number of columns. 
   
   
       10 . The face image display method according to  claim 8 , wherein the face image list display process includes displaying a plurality of thumbnail images, which correspond to a plurality of frames extracted from the video content data at equal time intervals, on a thumbnail display area which is disposed on an upper side or a lower side of the two-dimensional display area, by arranging the thumbnail images in line, and selecting, when a certain thumbnail image on the thumbnail display area is designated by a user, that one of the plurality of columns in the two-dimensional display area, to which the time zone to which the designated thumbnail image belongs is allocated.