CSS Ninjas appears to use flat colors at first glance, but each colored area has a subtle gradient, which gives it texture.

一眼看去，CSSNinjas似乎使用的是平直颜色。不过其实每个色彩区域都有微弱的渐变，创造出迷人的材质效果。

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First, a method to estimate the local image gradient, called the BEG (best estimation of gradient) algorithm was proposed to extract the texture orientation parameters.

首先提出了局部图像的梯度估计方法，称之为BEG(梯度的最佳估计)算法，用来提取图像的纹理方向特征参数。

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Using images' features such as gradient, mean, variance, degree of smoothing and texture characteristics to establish cost function may obtain the best results of target detection.

该方法利用动态规划理论中代价函数的建立过程来充分考虑图像中的灰度、均值、方差、光滑程度和纹理等多种特征，从而使目标检测的结果为最佳。

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This includes control over the fill: 16 million colours, transparency, gradient fills, and texture and picture fills.

填充色选项包括：1600万种颜色、透明度、渐变、纹理和图片填充。

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This includes control over the fill: 16 million colours, transparency, gradient fills, and texture and picture fills.

填充色选项包括：1600万种颜色、透明度、渐变、纹理和图片填充。

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