AUTOMATIC PHOTOGRAPHING METHOD WITH FACE RECOGNITION

• US 20100021019A1
• Filed: 11/14/2008
• Published: 01/28/2010
• Est. Priority Date: 07/23/2008
• Status: Active Grant

• Current Assignee: Altek Corporation
• Original Assignee: Altek Corporation
• Inventors: LIN, Tzu-Chih, LO, Huan-Chun
• Granted Patent: US 8,340,431 B2
• Time in Patent Office: Days
• US Class Current: 382/118
• CPC Class Codes: H04N 23/611 where the recognised objects include parts of the human body
• CPC Class Codes: H04N 23/68 for stable pick-up of the scene, e.g. compensating for camera body vibrations
• CPC Class Codes: H04N 23/6811 based on the image signal

Abstract

An automatic photographing method with face recognition is applied in a camera having a detecting lens and a photographing lens for a user to photograph a target. First, detect a face of the user through the detecting lens, and obtain a plurality of face images of the detected face. Then, capture an image variance of the obtained face images, and photograph the target through a photographing lens when the captured image variance exceeds a photographing starting value. Therefore, during the whole photographing process, photographing can be achieved through determining variations of the face images of the user without pressing the shutter key of the camera, thereby completely preventing handshakes resulted from the pressing action, and thus improving the photographing quality.

Claims

1. An automatic photographing method with face recognition, applied in a camera having a detecting lens and a photographing lens for a user to photograph a target, the method comprising:

detecting a face of the user through the detecting lens;

obtaining a plurality of face images of the detected face;

capturing an image variance of the obtained face images; and

photographing the target through the photographing lens when the captured image variance exceeds a photographing starting value.

2. The automatic photographing method with face recognition according to claim 1, further comprising:

focusing on the target through the photographing lens before photographing step.

3. The automatic photographing method with face recognition according to claim 2, wherein the focusing step comprises:

pressing a key of the camera to actuate the photographing lens to focus on the target.

4. The automatic photographing method with face recognition according to claim 2, wherein the focusing step comprises:

automatically actuating the photographing lens to focus on the target.

5. The automatic photographing method with face recognition according to claim 2, wherein the focusing step comprises:

focusing on the target through the photographing lens when the image variance captured in the focusing step exceeds the focusing starting value before photographing the target.

6. The automatic photographing method with face recognition according to claim 1, wherein the obtaining step comprises obtaining a plurality of pixel units of the face images of the detected face.

7. The automatic photographing method with face recognition according to claim 6, wherein the capturing step comprises capturing the image variance of the obtained face image from the plurality of pixel units of the obtained face image.