This tire surface image display method includes: a step of capturing a surface image of a tire (1) on a surface (1a) of which a mark having protrusions and recesses has been formed; a step of acquiring waveform data from the captured surface image; a step of creating a histogram from the waveform data; a step of, on the basis of the histogram, determining a first class threshold for distinguishing between the brightness of protruding portions of the mark and the brightness of the surface other than the protruding portions, and a second class threshold for distinguishing between the brightness of recessed portions of the mark and the brightness of the surface other than the recessed portions; and a step of using three attributes of color to depict a region of the histogram equal to or greater than the first class threshold, a region less than the first class threshold and greater than the second class threshold, and a region equal to or less than the second class threshold, thereby displaying the surface image of the tire, including the mark, on a screen (11a).
轮胎表面的图像显示方法包括以下步骤:拍摄在表面(1a)形成有具有凹凸的标记的轮胎(1)的表面图像的步骤;由该拍摄的表面图像获取波形数据的步骤;根据所述波形数据创建直方图的步骤;基于所述直方图,决定区别所述标记的凸部的亮度与所述凸部以外的所述表面的亮度的第一级别阈值和区别所述标记的凹部的亮度与所述凹部以外的所述表面的亮度的第二级别阈值的步骤;以及通过利用色彩的三属性表示所述直方图的所述第一级别阈值以上的区域、小于所述第一级别阈值且超过所述第二级别阈值的区域和所述第二级别阈值以下的区域,从而在画面(11a)上显示包含所述标记的所述轮胎的表面图像的步骤。
TIRE SURFACE IMAGE DISPLAY METHOD, AND IMAGE PROCESSING DEVICE EMPLOYED FOR IMAGE DISPLAY THEREOF
轮胎表面的图像显示方法以及用于其图像显示的图像处理装置
2021-06-25
Patent
Electronic Resource
Chinese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / G06T Bilddatenverarbeitung oder Bilddatenerzeugung allgemein , IMAGE DATA PROCESSING OR GENERATION, IN GENERAL |
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