Distance measurement method and system, and storage media

A distance measurement method, comprising:

• projecting a light beam with a speckle pattern to a plurality of reference flat surfaces and an object which are located at different position points, so as to show an image of the speckle pattern on each of the plurality of reference flat surfaces and the object respectively, wherein the speckle pattern contains a plurality of speckles;
• obtaining a plurality of reference image information through capturing the image of the speckle pattern on each of the plurality of reference flat surfaces;
• obtaining an object image information through capturing the image of the speckle pattern on the object;
• obtaining a plurality of comparison results through comparing the plurality of reference image information with the object image information;
• and
• computing the position of the object through performing an interpolation operation to the plurality of comparison results.

A storage media, has a processing software for computing a position of an object in a distance measurement system, the execution of the processing software comprising:

• receiving a plurality of reference image information contained in an image with a speckle pattern, wherein the image is projected from a light beam on a plurality of reference flat surfaces which are located on different position points, and the speckle contains a plurality of speckles;
• receiving an object image information contained in an image with the speckle pattern which is projected from the light beam on an object;
• obtaining a plurality of comparison results through comparing the plurality of reference image information with the object image information;
• and
• computing the position of the object through performing an interpolation operation to the plurality of comparison results.