Direction control device, direction control method and recording medium

Abstract

A direction control device includes: a camera unit that acquires an image captured by photographing a subject by a camera targeted for adjustment of a photographing direction; an image-processing unit that calculates a position of a first setting image that represents the subject in the captured image; a posture detection unit that detects a difference between a position of a second setting image that represents the subject in a reference image registered in advance and the position of the first setting image; and a camera control unit that shifts the photographing direction of the camera based on the difference.

1 . A control device comprising:
 at least one memory configured to store instructions; and   at least one processor configured to execute the instructions to perform:
 capturing, by a camera, an first image which display a predetermined marker; 
 calculating a first position of the predetermined marker in the first image; 
 calculating a capturing direction of the camera, based on an information extracted from the predetermined marker, the first position and a second position which is a position of the predetermined marker in a second image, wherein the second image is captured by the camera; 
 controlling to change the capturing direction of the camera, based on a calculation result. 
   
     
     
         2 . The control device according to the  claim 1 , wherein the processor configured to execute the instructions to perform:
 detecting a difference between the first position and the second position.   
     
     
         3 . The control device according to the  claim 2 , wherein the processor configured to execute the instructions to perform:
 acquiring the capturing direction of the camera in case the difference is absent.   
     
     
         4 . The control device according to the  claim 1 , wherein the processor configured to execute the instructions to perform:
 detecting the predetermined marker in the first image;   extracting an information from the predetermined marker, wherein the extracted information includes an installation height of the predetermined marker and a size of the predetermined marker;   calculating the position of the predetermined marker in the first image, based on the extracted information.   
     
     
         5 . A controlling method, comprising:
 capturing, by a camera, an first image which display a predetermined marker;   calculating a first position of the predetermined marker in the first image;   calculating a capturing direction of the camera, based on an information extracted from the predetermined marker, the first position and a second position which is a position of the predetermined marker in a second image, wherein the second image is captured by the camera;   controlling to change the capturing direction of the camera, based on a calculation result.   
     
     
         6 . The controlling method according to the  claim 5 , further comprising:
 detecting a difference between the first position and the second position.   
     
     
         7 . The controlling method according to the  claim 6 , further comprising:
 acquiring the capturing direction of the camera in case the difference is absent.   
     
     
         8 . The controlling method according to the  claim 5 , further comprising:
 detecting the predetermined marker in the first image;   extracting an information from the predetermined marker, wherein the extracted information includes an installation height of the predetermined marker and a size of the predetermined marker;   calculating the position of the predetermined marker in the first image, based on the extracted information.   
     
     
         9 . A non-transitory computer readable medium storing instructions for causing a computer to execute:
 capturing, by a camera, an first image which display a predetermined marker;   calculating a first position of the predetermined marker in the first image;   calculating a capturing direction of the camera, based on an information extracted from the predetermined marker, the first position and a second position which is a position of the predetermined marker in a second image, wherein the second image is captured by the camera;   controlling to change the capturing direction of the camera, based on a calculation result.   
     
     
         10 . The non-transitory computer readable medium according to the  claim 9 ,
 detecting a difference between the first position and the second position.   
     
     
         11 . The non-transitory computer readable medium according to the  claim 10 ,
 acquiring the capturing direction of the camera in case the difference is absent.   
     
     
         12 . The non-transitory computer readable medium according to the  claim 9 ,
 detecting the predetermined marker in the first image;   extracting an information from the predetermined marker, wherein the extracted information includes an installation height of the predetermined marker and a size of the predetermined marker;   calculating the position of the predetermined marker in the first image, based on the extracted information.