Electronic apparatus and method of generating depth map

A method of generating a depth map, adapted to for an electronic apparatus with a first camera and a second camera, comprising:

• projecting patterned invisible light on a scene;
• capturing a first image of the scene, the first image comprising visible light information;
• capturing a second image of the scene, the second image comprising visible light information and invisible light information, wherein the invisible light information comprises image signals generated from reflecting the patterned invisible light by the scene;
• obtaining first depth information and second depth information from the first image and the second image, wherein the step of obtaining the first depth information and the second depth information further comprises:
• comparing a visible light image of the first image with a visible light image of the second image to obtain the first depth information;
• and
• identifying an invisible light image in the second image to obtain the second depth information;
• evaluating accuracy of the first depth information and the second depth information to generate final depth information of the scene;
• and
• generating a depth map of the scene from the final depth information.

An electronic apparatus of generating a depth map, comprising:

• a projection device, projecting patterned infrared light on a scene;
• a first camera, capturing red-green-blue (RGB) light information to generate a first image of the scene;
• a second camera, capturing RGB light information and infrared light information to generate a second image of the scene;
• and
• a processing device, coupled to the projection device, the first camera and the second camera to receive the first image and the second image, the processing device obtaining first depth information and second depth information from the first image and the second image, and generating a depth map of the scene from the first depth information and the second depth information selectively, wherein the processing device comprises:
• a first depth information unit, comparing an RGB image of the first image with an RGB image of the second image to obtain the first depth information;
• a second depth information unit, identifying an infrared light image in the second image to obtain the second depth information;
• an evaluation unit, evaluating accuracy of the first depth information and the second depth information to generate final depth information of the scene;
• and
• a depth map generating unit, generating the depth map of the scene from the final depth information.

An electronic apparatus of generating a depth map, comprising:

• a projection device, projecting patterned infrared light on a scene;
• a first camera, capturing RGB light information to generate a first image of the scene;
• a second camera, capturing RGB light information to generate a second image of the scene;
• a third camera, capturing infrared light information to generate a third image of the scene;
• and
• a processing device, coupled to the projection device, the first camera, the second camera and the third camera to receive the first image, the second image, and the third image, the processing device obtaining first depth information and second depth information from the first image, the second image and the third image, and generating a depth map of the scene from the first depth information and the second depth information selectively, wherein the processing device comprises:
• a first depth information unit, comparing the first image with the second image to obtain the first depth information;
• a second depth information unit, identifying the third image to obtain the second depth information;
• an evaluation unit, evaluating accuracy of the first depth information and the second depth information to generate final depth information of the scene;
• and
• a depth map generating unit, generating the depth map of the scene from the final depth information.