How to Identify Patterns of Citywide Dynamic Traffic at a Low Cost? An In-Depth Neural Network Approach with Digital Maps

Figure 8

Feature in red channel captured by the traditional histogram method: the horizontal axis is the color value of red channel, ; the vertical axis is the logarithm calculation of the average number of pixels: (a) logarithm calculation of average number of pixels in red channel in morning peak hours out of restriction period, (b) logarithm calculation of average number of pixels in red channel in morning peak hours in restriction period, (c) logarithm calculation of average number of pixels in red channel in evening peak hours out of restriction period, and (d) logarithm calculation of average number of pixels in red channel in evening peak hours in restriction period.

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