本次我們是利用無人機影像采集的影像數(shù)據(jù)，對特征點的一些特征進行提取分析，然后再加載的矢量轉(zhuǎn)化的過程中出現(xiàn)了以下問題，主要是超限，另外還有幾個函數(shù)可以

ee.Algorithms.Image.Segmentation.seedGrid(size, gridType)
選擇用于聚類的種子像素。

參數(shù)。
size（整數(shù)，默認(rèn)：5）。
超級像素的種子位置間距，單位是像素。

gridType（字符串，默認(rèn)為 "方形"）。
網(wǎng)格的類型。正方形 "或 "六角形 "之一。

返回。圖像

ee.Algorithms.Image.Segmentation.SNIC(image, size, compactness, connectivity, neighborhoodSize, seeds)
基于SNIC（簡單非迭代聚類）的超級像素聚類。輸出一個群集ID的頻段和每個輸入頻段的每一個群集的平均數(shù)。如果沒有提供 "種子 "圖像作為輸入，輸出將包括一個包含生成的種子位置的 "種子 "帶。見。Achanta, Radhakrishna和Susstrunk, Sabine，"使用簡單非迭代聚類的超級像素和多邊形"，CVPR，2017。

參數(shù)。
image（圖像）。
用于聚類的輸入圖像。

size（整數(shù)，默認(rèn)：5）。
超級像素種子位置的間隔，單位是像素。如果提供 "種子 "圖像，則不產(chǎn)生網(wǎng)格。

compactness（浮點數(shù)，默認(rèn)為1）。
緊湊度系數(shù)。較大的數(shù)值會使集群更加緊湊（方形）。將此設(shè)置為0會使空間距離加權(quán)失效。

connectivity（整數(shù)，默認(rèn)：8）。
連通性。4或8都可以。

neighborhoodSize（整數(shù)，默認(rèn)為空）。
瓦片鄰域大小（避免瓦片邊界偽影）。默認(rèn)為2*大小。

seeds（圖像，默認(rèn)為空）。
如果提供，任何非零值的像素都被用作種子位置。相互接觸的像素（由 "連通性 "指定）被認(rèn)為屬于同一個集群。

返回。圖像

ee.Reducer.countEvery()

Returns a Reducer that computes the number of inputs.

No arguments.

Returns:?Reducer

返回一個計算輸入數(shù)的Reducer。

代碼：

var image = ee.Image("users/carloseduardotpa/20220524_120405_70_2420_3B_AnalyticMS_SR_harmonized_clip"),image2 = ee.Image("users/carloseduardotpa/20220524_123706_08_247a_3B_AnalyticMS_SR_harmonized_clip"),geometry = /* color: #d63000 */ee.Geometry.Point([-40.54259265059659, -6.016601660731103]),imageVisParam = {"opacity":1,"bands":["b3","b2","b1"],"min":128.03750796620568,"max":1076.3051816022903,"gamma":1},imageVisParam3 = {"opacity":1,"bands":["NDVI"],"min":0.6314883263385151,"max":0.7761275808135806,"palette":["ffaf36","e4ff00","e4ff00","3fff00","0d5200"]},imageVisParam2 = {"opacity":1,"bands":["NDWI"],"palette":["0014ff","0008ff","ffffff","ffffff","ffffff"]},geometry2 = /* color: #98ff00 */ee.Geometry.Polygon([[[-40.734193066483385, -5.88076230086368],[-40.74655282540109, -5.949061950684604],[-40.76852572839501, -6.041935853033961],[-40.73556793142542, -6.069248829219161],[-40.69608514238394, -6.077783746890778],[-40.70398003077222, -6.098608282157076],[-40.7067267731158, -6.201013709903857],[-40.53643718870099, -6.245383017974462],[-40.42657275574691, -6.26722502184506],[-40.40871980972078, -6.186678054545768],[-40.42468449271024, -6.149813484456435],[-40.494551398971105, -6.09519462520748],[-40.506573168915246, -5.967153831615714],[-40.557036784806705, -5.915596194510558]]]),caa_arb = /* color: #007727 */ee.FeatureCollection([ee.Feature(ee.Geometry.Point([-40.61472878477397, -5.999477179310845]),{"class": 1,"system:index": "0"}),ee.Feature(ee.Geometry.Point([-40.593743181441454, -6.000202743765224]),{"class": 1,"system:index": "1"}),ee.Feature(ee.Geometry.Point([-40.60811982176128, -6.000373464672966]),{"class": 1,"system:index": "2"}),ee.Feature(ee.Geometry.Point([-40.577190098673604, -6.001875373780318]),{"class": 1,"system:index": "3"}),ee.Feature(ee.Geometry.Point([-40.58461445322683, -6.0072658374835015]),{"class": 1,"system:index": "4"}),ee.Feature(ee.Geometry.Point([-40.55150596948877, -6.01029978014366]),{"class": 1,"system:index": "5"}),ee.Feature(ee.Geometry.Point([-40.55034725519434, -6.00769632793069]),{"class": 1,"system:index": "6"}),ee.Feature(ee.Geometry.Point([-40.544467853033694, -6.006928093751045]),{"class": 1,"system:index": "7"}),ee.Feature(ee.Geometry.Point([-40.54154960962549, -6.0032303532113795]),{"class": 1,"system:index": "8"}),ee.Feature(ee.Geometry.Point([-40.56099831199146, -5.995566946720059]),{"class": 1,"system:index": "9"}),ee.Feature(ee.Geometry.Point([-40.569655926048405, -5.987183934104295]),{"class": 1,"system:index": "10"}),ee.Feature(ee.Geometry.Point([-40.58163888245139, -5.982012631158508]),{"class": 1,"system:index": "11"}),ee.Feature(ee.Geometry.Point([-40.5962300994924, -5.981329724241203]),{"class": 1,"system:index": "12"}),ee.Feature(ee.Geometry.Point([-40.594743753807954, -5.978198419467451]),{"class": 1,"system:index": "13"}),ee.Feature(ee.Geometry.Point([-40.558571907061, -5.972833484321754]),{"class": 1,"system:index": "14"}),ee.Feature(ee.Geometry.Point([-40.562747854044915, -5.979799814659621]),{"class": 1,"system:index": "15"}),ee.Feature(ee.Geometry.Point([-40.55548757574285, -5.982676242602119]),{"class": 1,"system:index": "16"}),ee.Feature(ee.Geometry.Point([-40.539282822268035, -5.987507044661501]),{"class": 1,"system:index": "17"}),ee.Feature(ee.Geometry.Point([-40.52296993660863, -6.013106640673962]),{"class": 1,"system:index": "18"}),ee.Feature(ee.Geometry.Point([-40.52657482552465, -6.014130941042587]),{"class": 1,"system:index": "19"}),ee.Feature(ee.Geometry.Point([-40.513791741604955, -6.000380384356329]),{"class": 1,"system:index": "20"}),ee.Feature(ee.Geometry.Point([-40.50655334808754, -5.990581624070123]),{"class": 1,"system:index": "21"}),ee.Feature(ee.Geometry.Point([-40.52696833509857, -5.985594671183795]),{"class": 1,"system:index": "22"}),ee.Feature(ee.Geometry.Point([-40.5382857486324, -5.97151929875015]),{"class": 1,"system:index": 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"41"}),ee.Feature(ee.Geometry.Point([-40.6941168017702, -5.965450080310566]),{"class": 1,"system:index": "42"}),ee.Feature(ee.Geometry.Point([-40.68865082772158, -5.984318822002688]),{"class": 1,"system:index": "43"}),ee.Feature(ee.Geometry.Point([-40.67550660091188, -5.993237668573697]),{"class": 1,"system:index": "44"}),ee.Feature(ee.Geometry.Point([-40.605201674393065, -6.155015332827855]),{"class": 1,"system:index": "45"}),ee.Feature(ee.Geometry.Point([-40.58935895610669, -6.155071070739989]),{"class": 1,"system:index": "46"}),ee.Feature(ee.Geometry.Point([-40.61301463744657, -6.145305292893435]),{"class": 1,"system:index": "47"}),ee.Feature(ee.Geometry.Point([-40.597917208382015, -6.1628019903175995]),{"class": 1,"system:index": "48"}),ee.Feature(ee.Geometry.Point([-40.57569778324729, -6.160751668321601]),{"class": 1,"system:index": "49"}),ee.Feature(ee.Geometry.Point([-40.56886661247233, -6.164686021914153]),{"class": 1,"system:index": "50"}),ee.Feature(ee.Geometry.Point([-40.5530347140701, -6.152084547966948]),{"class": 1,"system:index": "51"}),ee.Feature(ee.Geometry.Point([-40.55778117296199, -6.151352118604018]),{"class": 1,"system:index": "52"}),ee.Feature(ee.Geometry.Point([-40.54073221839268, -6.13300095557247]),{"class": 1,"system:index": "53"}),ee.Feature(ee.Geometry.Point([-40.54900931191731, -6.134071220472289]),{"class": 1,"system:index": "54"}),ee.Feature(ee.Geometry.Point([-40.56499703183946, -6.136010377476307]),{"class": 1,"system:index": "55"}),ee.Feature(ee.Geometry.Point([-40.52958469735488, -6.152986867381293]),{"class": 1,"system:index": "56"}),ee.Feature(ee.Geometry.Point([-40.52874044203274, -6.158260665183752]),{"class": 1,"system:index": "57"}),ee.Feature(ee.Geometry.Point([-40.53038111923358, -6.160965118181293]),{"class": 1,"system:index": "58"}),ee.Feature(ee.Geometry.Point([-40.5525953354724, -6.154916357750047]),{"class": 1,"system:index": "59"}),ee.Feature(ee.Geometry.Point([-40.54672334487697, -6.171550158702447]),{"class": 1,"system:index": "60"}),ee.Feature(ee.Geometry.Point([-40.526496899290755, -6.172037534788285]),{"class": 1,"system:index": "61"})]),mata_ciliar = /* color: #a3ff00 */ee.FeatureCollection([ee.Feature(ee.Geometry.Point([-40.584654259767525, -6.04465190072895]),{"class": 2,"system:index": "0"}),ee.Feature(ee.Geometry.Point([-40.577444481935494, -6.047212499104433]),{"class": 2,"system:index": "1"}),ee.Feature(ee.Geometry.Point([-40.58984701642036, -6.050029143315277]),{"class": 2,"system:index": "2"}),ee.Feature(ee.Geometry.Point([-40.599249832345414, -6.036520567038078]),{"class": 2,"system:index": "3"}),ee.Feature(ee.Geometry.Point([-40.60734290248241, -6.03432332756454]),{"class": 2,"system:index": "4"}),ee.Feature(ee.Geometry.Point([-40.62531274309408, -6.030671928934875]),{"class": 2,"system:index": "5"}),ee.Feature(ee.Geometry.Point([-40.630848822500816, -6.031482807326099]),{"class": 2,"system:index": "6"}),ee.Feature(ee.Geometry.Point([-40.63166421404134, -6.034427566021885]),{"class": 2,"system:index": "7"}),ee.Feature(ee.Geometry.Point([-40.619526024168955, -6.021222462769743]),{"class": 2,"system:index": "8"}),ee.Feature(ee.Geometry.Point([-40.72808609360753, -5.908257251095358]),{"class": 2,"system:index": "9"})]),estrada = /* color: #7f7f7f */ee.FeatureCollection([ee.Feature(ee.Geometry.Point([-40.738776469671876, -5.931005189311238]),{"class": 3,"system:index": "0"}),ee.Feature(ee.Geometry.Point([-40.74067173094256, -5.937474503952196]),{"class": 3,"system:index": "1"}),ee.Feature(ee.Geometry.Point([-40.743232662801056, -5.94374429648246]),{"class": 3,"system:index": "2"}),ee.Feature(ee.Geometry.Point([-40.74460595381668, -5.950445743102636]),{"class": 3,"system:index": "3"}),ee.Feature(ee.Geometry.Point([-40.74346557703663, -5.954910080887217]),{"class": 3,"system:index": "4"}),ee.Feature(ee.Geometry.Point([-40.73943420444502, -5.970151132477453]),{"class": 3,"system:index": "5"}),ee.Feature(ee.Geometry.Point([-40.73834337746799, -5.980823701691958]),{"class": 3,"system:index": "6"}),ee.Feature(ee.Geometry.Point([-40.73740070425976, -5.988022344994524]),{"class": 3,"system:index": "7"}),ee.Feature(ee.Geometry.Point([-40.73508303241837, -5.998362520472057]),{"class": 3,"system:index": "8"}),ee.Feature(ee.Geometry.Point([-40.72993720448144, -6.003987311574017]),{"class": 3,"system:index": "9"}),ee.Feature(ee.Geometry.Point([-40.72959388172753, -6.0108160587113]),{"class": 3,"system:index": "10"}),ee.Feature(ee.Geometry.Point([-40.72083915150292, -5.9995485800255715]),{"class": 3,"system:index": "11"}),ee.Feature(ee.Geometry.Point([-40.69775364326642, -5.997282678653309]),{"class": 3,"system:index": "12"}),ee.Feature(ee.Geometry.Point([-40.663232012537286, -5.989981337911669]),{"class": 3,"system:index": "13"}),ee.Feature(ee.Geometry.Point([-40.66889683797674, -5.9935665329312995]),{"class": 3,"system:index": "14"}),ee.Feature(ee.Geometry.Point([-40.67735116079168, -5.996468816411097]),{"class": 3,"system:index": "15"}),ee.Feature(ee.Geometry.Point([-40.647618179900185, -5.988640678376411]),{"class": 3,"system:index": "16"}),ee.Feature(ee.Geometry.Point([-40.64012257034011, -5.9956230547416]),{"class": 3,"system:index": "17"}),ee.Feature(ee.Geometry.Point([-40.61840740615554, -5.988239262367536]),{"class": 3,"system:index": "18"}),ee.Feature(ee.Geometry.Point([-40.63394725440646, -6.007377867896078]),{"class": 3,"system:index": "19"}),ee.Feature(ee.Geometry.Point([-40.690975186055546, -6.159311596077813]),{"class": 3,"system:index": "20"}),ee.Feature(ee.Geometry.Point([-40.694494244283085, -6.172197058274691]),{"class": 3,"system:index": "21"}),ee.Feature(ee.Geometry.Point([-40.693142830566835, -6.135375016533586]),{"class": 3,"system:index": "22"}),ee.Feature(ee.Geometry.Point([-40.68571223317025, -6.110495424119384]),{"class": 3,"system:index": "23"})]),caa_narb = /* color: #99c23f 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"26"}),ee.Feature(ee.Geometry.Point([-40.697375971572264, -5.988212103854728]),{"class": 4,"system:index": "27"})]),Solo_expost = /* color: #ffcfd2 */ee.FeatureCollection([ee.Feature(ee.Geometry.Point([-40.63058065732151, -6.0672033863063675]),{"class": 5,"system:index": "0"}),ee.Feature(ee.Geometry.Point([-40.62577413876682, -6.0691664308253825]),{"class": 5,"system:index": "1"}),ee.Feature(ee.Geometry.Point([-40.61441859064429, -6.075988309029962]),{"class": 5,"system:index": "2"}),ee.Feature(ee.Geometry.Point([-40.587112034395204, -6.06553775512769]),{"class": 5,"system:index": "3"}),ee.Feature(ee.Geometry.Point([-40.5489595590289, -6.051752653631657]),{"class": 5,"system:index": "4"}),ee.Feature(ee.Geometry.Point([-40.58689179536657, -6.013346549938661]),{"class": 5,"system:index": "5"}),ee.Feature(ee.Geometry.Point([-40.578480387895866, -6.0032741647299614]),{"class": 5,"system:index": "6"}),ee.Feature(ee.Geometry.Point([-40.5709886399716, -5.992601658961506]),{"class": 5,"system:index": "7"}),ee.Feature(ee.Geometry.Point([-40.571932777544845, -5.996101475665525]),{"class": 5,"system:index": "8"}),ee.Feature(ee.Geometry.Point([-40.58449638405155, -5.9885072640404475]),{"class": 5,"system:index": "9"}),ee.Feature(ee.Geometry.Point([-40.57922560317252, -5.985313878866977]),{"class": 5,"system:index": "10"}),ee.Feature(ee.Geometry.Point([-40.522105140765795, -5.980571482965502]),{"class": 5,"system:index": "11"}),ee.Feature(ee.Geometry.Point([-40.512148780902514, -5.980998300480549]),{"class": 5,"system:index": "12"}),ee.Feature(ee.Geometry.Point([-40.61170588559919, -5.944094657456611]),{"class": 5,"system:index": "13"}),ee.Feature(ee.Geometry.Point([-40.67304725623989, -5.976807689237552]),{"class": 5,"system:index": "14"}),ee.Feature(ee.Geometry.Point([-40.6777679441061, -5.972795560724939]),{"class": 5,"system:index": "15"}),ee.Feature(ee.Geometry.Point([-40.65086540264994, -5.9805439190284435]),{"class": 5,"system:index": "16"}),ee.Feature(ee.Geometry.Point([-40.56635997488986, -6.084730165293431]),{"class": 5,"system:index": "17"}),ee.Feature(ee.Geometry.Point([-40.58528319154404, -6.077164290059906]),{"class": 5,"system:index": "18"}),ee.Feature(ee.Geometry.Point([-40.663569843017775, -6.086256272565045]),{"class": 5,"system:index": "19"}),ee.Feature(ee.Geometry.Point([-40.685218495803994, -6.0982900500198545]),{"class": 5,"system:index": "20"}),ee.Feature(ee.Geometry.Point([-40.65347817723243, -6.116093842435042]),{"class": 5,"system:index": "21"}),ee.Feature(ee.Geometry.Point([-40.629520341834564, -6.1561493068238615]),{"class": 5,"system:index": "22"}),ee.Feature(ee.Geometry.Point([-40.63312523075058, -6.157344005716098]),{"class": 5,"system:index": "23"}),ee.Feature(ee.Geometry.Point([-40.67839320701393, -6.159765697845539]),{"class": 5,"system:index": "24"}),ee.Feature(ee.Geometry.Point([-40.70171202525059, -6.141569805397965]),{"class": 5,"system:index": "25"})]); Map.setCenter(-40.54259265059659,-6.016601660731103,14); var amostras = caa_arb.merge(mata_ciliar).merge(estrada).merge(caa_narb).merge(Solo_expost); var planetscope = ee.ImageCollection([image, image2]).mosaic(); var planetscope = planetscope.clip(geometry2);var trueColorVis = {min: 0.0,max: 2000.0, bands:"b3,b2,b1" }; Map.addLayer(planetscope, trueColorVis, 'True Color'); Map.addLayer(geometry2, {}, 'AOI');//1red //2green //3blue //4nirvar ndvi = planetscope.normalizedDifference(['b4','b1']).rename('NDVI'); var nwvi = planetscope.normalizedDifference(['b4','b2']).rename('NDWI');var planetscope = planetscope.addBands(ndvi); var planetscope = planetscope.addBands(nwvi);var square = ee.Kernel.square({radius: 4}); var entropy = planetscope.select('b4').toByte().entropy(square); var glcm = planetscope.select('b4').toByte().glcmTexture({size: 4}); var contrast = glcm.select('b4_contrast'); var asm = glcm.select('b4_asm');var img_planetscope = planetscope.float().divide(10000);// 分割 -----------------------------------------------------------------------------var seeds = ee.Algorithms.Image.Segmentation.seedGrid(10); var snic = ee.Algorithms.Image.Segmentation.SNIC({image: img_planetscope,compactness: 0,connectivity: 8,neighborhoodSize: 64,size: 2,seeds: seeds });var clusters_snic = snic.select("clusters")var vectors = clusters_snic.reduceToVectors({geometryType: 'polygon',reducer: ee.Reducer.countEvery(),scale: 10,maxPixels: 1e13,geometry: geometry2,bestEffort:true });var empty = ee.Image().byte();var outline = empty.paint({featureCollection: vectors,color: 1,width: 1 });Map.addLayer(outline, {palette: 'FF0000'}, 'segments');//var img_planetscope = img_planetscope.addBands(glcm.select(['b4_contrast','b4_asm',"b4_corr"]).float()).addBands(entropy);var train_polys = vectors.map(function(feat){feat = ee.Feature(feat);var point = feat.geometry();var mappedPolys = amostras.map(function(poly){var cls = poly.get("class")var intersects = poly.intersects(point, ee.ErrorMargin(1));var property = ee.String(ee.Algorithms.If(intersects, 'TRUE', 'FALSE'));return feat.set('belongsTo', property).set('class', cls);});return mappedPolys; }).flatten().filter(ee.Filter.neq('belongsTo', 'FALSE'));//提取特征 --------------------------------------------- var train_areas = train_polys.reduceToImage({properties: ['class'],reducer: ee.Reducer.first() }).rename('class').toInt();// 提取矢量邊界從影像中------------------------------------------------------------------------------------------ var predict_image = vectors.reduceToImage({properties: ['label'],reducer: ee.Reducer.first() }).rename('id').toInt();img_planetscope = img_planetscope.addBands(predict_image)var FullImage_mean = img_planetscope.reduceConnectedComponents({reducer: ee.Reducer.mean(),labelBand: 'id' });/*var FullImage_std = img_planetscope.reduceConnectedComponents({reducer: ee.Reducer.stdDev(),labelBand: 'id' });var FullImage_median = img_planetscope.reduceConnectedComponents({reducer: ee.Reducer.median(),labelBand: 'id' });var FullImage_area = ee.Image.pixelArea().addBands(img_planetscope.select('id')).reduceConnectedComponents(ee.Reducer.sum(), 'id') var FullImage_sizes = ee.Image.pixelLonLat().addBands(img_planetscope.select('id')).reduceConnectedComponents(ee.Reducer.minMax(), 'id') var FullImage_width = FullImage_sizes.select('longitude_max').subtract(FullImage_sizes.select('longitude_min')).rename('width') var FullImage_height = FullImage_sizes.select('latitude_max').subtract(FullImage_sizes.select('latitude_min')).rename('height') */ // 加入矢量var Pred_bands = ee.Image.cat([FullImage_mean,//FullImage_std,//FullImage_median,//FullImage_area,//FullImage_width,//FullImage_height ]).float();var clip_Image = Pred_bands.clip(train_polys); var train_areas = train_areas.addBands(clip_Image); var predictionBands = Pred_bands.bandNames(); var classifierTraining = train_areas.select(predictionBands).sampleRegions({collection: train_polys, properties: ['class'], scale: 10 }); var RF = ee.Classifier.smileRandomForest(50).train({features:classifierTraining, classProperty:'class', inputProperties: predictionBands});var classified_RF = Pred_bands.select(predictionBands).classify(RF); // print(classified_RF); Map.addLayer(classified_RF); // Map.addLayer(planetscope, imageVisParam,'img'); // Map.addLayer(planetscope, imageVisParam3,'ndvi'); // Map.addLayer(planetscope, imageVisParam2, "ndwi");//影像導(dǎo)出 Export.image.toDrive({image: classified_RF,description: 'teste_classif',scale: 3,maxPixels: 1e13,region: geometry });

結(jié)果：

?黃色細(xì)線部分為分割區(qū)域

影像分辨率3米?

?

?

總結(jié)

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