Thee color of the markers corresponds with the Cost of Living in the city. Red markers show more expensive cities, green ones show cheaper cities.
这些彩色标记与各个城市的生活费用是相对应的，红色的标记表示了生活费用较高的城市，而绿色的则表示了生活费用较低的城市。
Experiments show that the proposed algorithm has obvious advantage over traditional ones, especially in color difference and image details.
实验表明该算法获得的图像匹配结果较传统算法在颜色相似度和细节保持方面均有明显的提高。
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