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    • 2. 发明授权
    • Bias and plateau limited advanced contrast enhancement
    • 偏倚和高原限制了先进的对比度增强
    • US08774554B1
    • 2014-07-08
    • US13352765
    • 2012-01-18
    • Stuart Martin Winn
    • Stuart Martin Winn
    • G06K9/00G06K9/40G06T5/40G06T5/50
    • G06T5/40G06T5/008G06T5/50G06T2207/10016G06T2207/20012G06T2207/20021
    • A method of enhancing an image. This includes the steps of: dividing the image into multiple tiles and constructing a histogram for each tile, wherein the histogram represents a distribution of pixel intensity values in each tile. In addition, the method applies a bias value to the histogram and a plateau value to the histogram. A cumulative histogram is constructed after applying the bias value and the plateau value to the histogram. The method transforms each pixel in the image, by weighing four cumulative histograms, respectively, in four adjacent and closest tiles to the pixel under consideration. The pixel under consideration is modified based on a weighted cumulative histogram.
    • 一种增强图像的方法。 这包括以下步骤:将图像划分成多个瓦片并为每个瓦片构建直方图,其中直方图表示每个瓦片中的像素强度值的分布。 此外,该方法对直方图应用偏置值,并对直方图应用平台值。 在将偏差值和平台值应用于直方图之后构建累积直方图。 该方法通过将四个累积直方图分别称为所考虑的像素的四个相邻和最近的平铺中,从而对图像中的每个像素进行变换。 基于加权累积直方图修改所考虑的像素。