Pan-sharpening for HSV
这是锐化后的结果：
没有锐化的效果：
两者差异还是比较明显的！
具体代码如下：
代码语言：javascript复制// Grab a sample L8 image and pull out the RGB and pan bands.
var image = ee.Image(ee.ImageCollection('LANDSAT/LC08/C01/T1_TOA')
.filterDate('2017-01-01', '2017-12-31')
.filterBounds(ee.Geometry.Point(-122.0808, 37.3947))
.sort('CLOUD_COVER')
.first());
var rgb = image.select('B4', 'B3', 'B2');
var pan = image.select('B8');
// Convert to HSV, swap in the pan band, and convert back to RGB.这里就是一个转换
var huesat = rgb.rgbToHsv().select('hue', 'saturation');
var upres = ee.Image.cat(huesat, pan).hsvToRgb();
// There are many fine places to look; here is one. Comment
// this out if you want to twiddle knobs while panning around.
Map.setCenter(-122.0808, 37.3947, 14);
// Display before and after layers using the same vis parameters.
Map.addLayer(rgb, {max: 0.3}, 'Original');
Map.addLayer(upres, {max: 0.3}, 'Pansharpened');
