`ImageMeasurements[image, property]` gives a named measurement of an image.
与 .wl 参考的差异： `ImageMeasurements` intensity on colour images
ImageMeasurements[image, "prop"]
ImageMeasurements[image, "prop", format]
ImageMeasurements[{image1, image2, …}, …]
ImageMeasurements[Image[{{0., 1.}, {0.5, 0.25}}], "Mean"]
→ 0.4375ImageMeasurements[Image[{{{1., 0., 0.}, {0., 1., 0.}}}], "Mean"]
→ {0.5, 0.5, 0.}ImageMeasurements[Image[{{{1., 0., 0.}, {0., 1., 0.}}}], "Entropy"]
→ 0.6931471805599453ImageMeasurements[Image[{{0., 1.}, {0.5, 0.25}}], {"Mean", "Total"}]
→ {0.4375, 1.75}Take[ImageMeasurements[Image[{{0., 1.}}], "Properties"], 3]
→ {AspectRatio, Channels, ColorSpace}