Baidu Online Network Technology (beijing) Co., Ltd.

Beijing Baidu Netcom Science Technology Co., Ltd

Yuhua Dong

Zhongqin Wu

Yuan Lin

Sili Chen

Binbin Zheng

Yijie Yan

Zhaoliang Liu

Haoxing Wang

Zhaohu Li

Zhihao Wang

Ziwen Qin

Provided are a tour guiding method and apparatus, an electronic device and a storage medium. The method includes receiving a video stream collected by a user in a current location area of a target scenic spot and sent by an application device; determining, based on the collected video stream and prestored three-dimensional point cloud data of the target scenic spot, an augmented-reality-based content resource package corresponding to the current location area, where the augmented-reality-based content resource package includes at least six-degrees-of-freedom attitude data of the application device; and sending the augmented-reality-based content resource package corresponding to the current location area to the application device to enable the application device to provide the augmented-reality-based content resource package corresponding to the front location area for the user.

Tour guiding method, electronic device and storage medium

The present disclosure discloses a method and apparatus for constructing a three-dimensional map. A specific embodiment of the method includes: acquiring multiple frames of a monocular image containing a target object collected by a monocular camera, and constructing a three-dimensional map containing the target object and other objects in the monocular image based on the monocular image; determining an absolute scale of the target object, and determining a ratio of a relative scale corresponding to the target object to the absolute scale; and adjusting a scale of each object in the three-dimensional map to obtain a three-dimensional map meeting a preset condition based on the ratio. The method and apparatus provided by the present disclosure achieves the construction of a world coordinate system with absolute scales in a three-dimensional map constructed based on a monocular image.

Method and apparatus for constructing three-dimensional map

A method and apparatus for generating image information. A specific embodiment of the method includes: acquiring a rotation angle and a scaling of a target image relative to a reference image, and acquiring an intrinsic parameter of a video camera collecting the reference image; generating a projective transformation matrix based on the rotation angle, the scaling and the intrinsic parameter; generating a coordinate offset of the each neighborhood pixel of the feature point in the reference image; generating, based on a coordinate of the feature point in the reference image, the coordinate offset of the each neighborhood pixel of the feature point in the reference image and the projective transformation matrix, coordinates of the each neighborhood pixel of the feature point in the reference image; and generating a feature point descriptor of the feature point.

Method and apparatus for generating image information

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Beijing, China

Yuhua Dong