3D Depth Image through Multi-Focus Images by using a Single Camera

使用单相机通过多焦点图像获得 3D 深度图像

• 批准号: 03650348
• 负责人: EIHO Shigeru
• 金额: $ 1.15万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650348/
• 关键词: Measurement of blur; Multi-focus images; Image sequence; Depth image; 3D measurement; 3次元形状計測; 合焦点位置の計測

In this research, we have developed a method to make the range image of objects by using multi-focus images taken by changing the focus of the lens system. The distance of focus point on every pixel is measured by using these multi-focussed images. Thus the depth image can be obtained from those distance images and can obtain 3D shape of the object without using the stereo camera system. The results obtained are:1. Development of a new method to measure the quantity of blur (radius of blur): The blur difference is estimated by using a set of pixels on two images where the focus is not on the pixel. This difference indicates the focus position corresponding to each pixel and the bluer radius of the pixel on the image.2. Development of the method to measure 3D depth image of the object: By adding these focus values with the weights of bluer radius, the depth value of each pixel position is obtainable. Experimental results of some objects show that the method developed can measure the depth image data by using a single camera with enough accuracy.

在本研究中，我们发展了一种利用多焦点影像来制作物体距离影像的方法，此多焦点影像是借由改变透镜系统的焦点来取得。利用这些多焦点图像测量每个像素上的焦点距离。因此，可以从这些距离图像获得深度图像，并且可以在不使用立体相机系统的情况下获得对象的3D形状。得到的结果是：1.开发了一种新的方法来测量模糊量（模糊半径）：通过使用焦点不在像素上的两个图像上的一组像素来估计模糊差异。此差异指示对应于每个像素的焦点位置和图像上像素的蓝色半径。2.提出了一种测量物体三维深度图像的方法：通过将这些焦点值与蓝半径的权重相加，可以获得每个像素位置的深度值。实验结果表明，该方法可以用单摄像机测量深度图像数据，具有足够的精度。