Local optimization algorithm-based tooth tongue palate side panoramic picture stitching method

A local optimization and panoramic image technology, applied in the fields of image processing and stomatology, can solve problems such as high cost, poor patient experience, and low efficiency

Inactive Publication Date: 2018-10-12
南京齿贝犀科技有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

This shooting method has high cost (time cost and co

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  • Local optimization algorithm-based tooth tongue palate side panoramic picture stitching method

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Embodiment Construction

[0015] The present invention will be described in detail below in combination with specific embodiments.

[0016] The present invention as figure 1 As shown, the first step: the panoramic image of the tongue (palate) side is collected by a macro camera. The camera is fixed on a rail preset near the tongue (palatal) side, and the camera slides along the rail during shooting. During the sliding process, the camera should be stable and there will be no drastic field of view changes. Stable shooting means that the angle formed by the optical axis of the camera and the plane where the lingual (palatal) side of the tooth is located is approximately constant. In case of unstable shaking (for example: unstable shaking caused by deformity of the patient's teeth), the shaking data should be captured by the inertial sensor and fed back into the algorithm.

[0017] Step 2: The obtained video of the lingual (palatal) side of the tooth is saved as a discrete image according to its frame ...

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Abstract

The invention discloses a local optimization algorithm-based tooth tongue palate side panoramic picture stitching method. The method comprises the following steps of: firstly carrying out scanning type shooting on a tooth tongue (palate) side through a camera rejected on a track so as to obtain a scanning video of the tooth tongue (palate) side; carrying out inter-frame screening on the scanning video so as to eliminate images with relatively more repeated or redundant information; carrying out cylindrical projection on the screened images according to a curvature of the shooting track; inputting the projected images into a stitching algorithm, extracting all the image feature points and carrying out optimal calculation between every two image feature points so as to obtain parameters required for the stitching; and finally sequentially stitching the image sequences according to the obtained parameters so as to obtain a stitched image of the tooth tongue (palate) side. The method has the beneficial effects of being simple, easy to operate and high in stability.

Description

technical field [0001] The invention belongs to the technical field of image processing and stomatology, and relates to a method for generating a panorama based on the lingual (palatal) side of teeth. Background technique [0002] Traditional dental checkups require users to visit a clinic. Dentists need to observe every moment of teeth with an oral camera. Another way is to complete the shooting of the panorama of the patient's oral cavity with the assistance of a nurse. This shooting method has high cost (time cost and expense cost), low efficiency, and poor patient experience. The photographing of teeth is usually also divided into three parts: occlusal surface, labial (buccal) surface and lingual (palatal) surface. The lingual (palatal) side is difficult to brush when people brush their teeth daily, and it is also an area where smoke spots or calculus exist. Therefore, shooting panoramic images of the lingual (palatal) side has important practical value for dentists....

Claims

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Application Information

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IPC IPC(8): G06T3/40G06T7/33
CPCG06T3/4038G06T7/33G06T2207/30036
Inventor 何睿清桂林卿薛文李俊余海姚军孔文宣
Owner 南京齿贝犀科技有限公司
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