US 11,659,270 B2
Image processing device for detecting horizontal direction of photographing angle
Yuki Imatoh, Yokohama (JP)
Assigned to LAPIS Semiconductor Co., Ltd., Yokohama (JP)
Filed by LAPIS Semiconductor Co., Ltd., Yokohama (JP)
Filed on Feb. 21, 2022, as Appl. No. 17/676,779.
Application 17/676,779 is a continuation of application No. 17/115,807, filed on Dec. 9, 2020, granted, now 11,284,004.
Application 17/115,807 is a continuation of application No. 16/041,842, filed on Jul. 23, 2018, granted, now 10,880,484, issued on Dec. 29, 2020.
Claims priority of application No. JP2017-142766 (JP), filed on Jul. 24, 2017.
Prior Publication US 2022/0182550 A1, Jun. 9, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 5/232 (2006.01); H04N 5/225 (2006.01); H04N 5/262 (2006.01)
CPC H04N 5/23293 (2013.01) [H04N 5/2257 (2013.01); H04N 5/23229 (2013.01); H04N 5/2628 (2013.01); H04N 5/2254 (2013.01); H04N 5/23212 (2013.01); H04N 5/23216 (2013.01); H04N 5/23248 (2013.01); H04N 5/23296 (2013.01)] 2 Claims
OG exemplary drawing
 
1. An image processing device, comprising:
an image rotation unit configured to rotate a display image based on image data photographed by an imaging unit on a display plane step by step after a first rotation by a first angle, wherein the image rotation unit performs rotation of the first angle in the first rotation and performs rotation of a predetermined angle in second and subsequent rotations until an end point of a rotation range;
a determination unit configured to determine a horizontal direction of a photographing angle of the imaging unit based on, for each of the rotated display images, a number of pixels of a specific color included in the display image along a scanning line direction within the display plane.