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Pearlescent coatings become highly popular to the modern generation of color rendering materials due to their unique color effect. However, it is quite challenging to evaluate its color appearance by traditional color measurement. A low-cost camera is a highly efficient device for multi-geometry color appearance estimation for pearlescent bottles, which has been achieved through the camera characterization, sample image capturing, and then mathematical transforming from RGB (red, green, and blue) values to color appearance attributes based on the color appearance model of CIECAM02. A tele-spectroradiometer for physical measurement together with visual assessment is applied for comparison with the camera method to evaluate the accuracy of camera predictions and discuss the applicability of CIECAM02. The experimental results indicate that the camera data have strong correlation with the physical measurement and also fit well with visual data except for a slight slope shift existing in lightness due to a divinable psychophysical magnitude variation for spatial-dependent color samples. Hence it is feasible to estimate the color appearance of pearlescent bottles using a digital camera. 相似文献
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人类长时间生活在空气中,对空气的压强已经适应了,感受不到有大气压的存在.本文使用日常生活中的饮料瓶,从不同的角度来演示大气压的存在,使学生直观体会到大气层的存在,能给学生留下深刻的印象,有助于理解大气压强概念;同时体现了新课程,从生活走向物理,从物理走向社会,使学生真切体会到物理就在身边. 相似文献
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对面的人儿看过来,这里的魔术真精彩!走过路过不要错过,有钱捧个钱场,没钱就给点儿掌声!什么?老师有"透视眼"?这太让人不可思议了!走,赶紧去看看怎么回事吧!你们听说过近视眼、远视眼,可从来没听说"透视眼"吧!告诉你们,我们的数学老师有一双"透视眼",可厉害了!数学老师讲课的方式很特别,时常给我们带来惊喜,我们都非常喜欢上数学课。每次上课铃刚响,我们就 相似文献
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利用饮料瓶和乒乓球制作浮力成因演示器的最早雏型在<物理教学>中文章<物理实验创造技法>[1]中提出.用塑料饮料瓶截去瓶底后倒置,放入 乒乓球后注水,观察现象;然后用手堵住瓶口,再一次观察现象,对比演示说明浮力成因.虽易于操作,但科学性欠妥. 相似文献
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