small update, commented Grayscale analysis, to avoid needing too RAM, README.md updated

README.md

@@ -2,33 +2,69 @@
 machine learning server, for image classification
 
 
-
  - Reads all the datasets in the folder /dataset
- - Each image is resized to the same size, configured in the config.json
+ - Runs a server that allows to upload images to classify
+ - Accepts PNG, JPG, JPEG
+ - Each image is resized to the same size and converted to PNG type, configured in the config.json
  - For the input images, calculates the euclidean distances
- - Gets the nearest neighbour
- - Show the result, that is the label of the object in the image
-
-
+ - Applyies KNN (K-Nearest Neighbours algorithm) to classify the images
+ - Server returns the classification result, that is the label of the object in the image
 
 
 
+### Instructions
 
+Put dataset in /dataset directory with subdirectories, where each subdirectory contains images of one element.
 
+For example:
+```
+dataset/
+    leopard/
+        img01.png
+        img02.png
+        img03.png
+        ...
+    laptop/
+        img01.png
+        img02.png
+        ...
+    camera/
+        img01.png
+        img02.png
+        ...
+```
+So, we have each image and to which element category is (the name of subdirectory).
 
 
+Then, run the server:
+```
+    >./galdric
+```
 
+Now, just need to perform petitions with new images, to get the response from the server classifying them:
+```bash
+    curl -F file=@./testimage.png http://127.0.0.1:3055/image
+```
+And the server will return:
+```
+    seems to be a leopard
+```
 
+Can perform some tests with the test.sh file:
+```
+    bash test.sh
+```
 
 
 -------------
+#### Useful commands
 
 send file over ssh:
 ```
-scp dataset.tar.gz root@51.255.193.106:/root/galdric
+scp dataset.tar.gz root@SERVERIP:/root/galdric
 ```
 
 on the server, untar file:
 ```
 tar -xvzf dataset.tar.gz
-```
+```

knn.go

@@ -87,14 +87,20 @@ func knn(datasets []Dataset, imgInput image.Image) string {
 	k := 6
 	var neighbours []Neighbour
 	var neighboursED []Neighbour
-	var neighboursG []Neighbour
+	/*
+		var neighboursG []Neighbour
+	*/
 
 	imgED := EdgeDetection(imgInput)
-	imgG := Grayscale(imgInput)
+	/*
+		imgG := Grayscale(imgInput)
+	*/
 
 	histogram := imageToHistogram(imgInput)
 	histogramED := imageToHistogram(imgED)
-	histogramG := imageToHistogram(imgG)
+	/*
+		histogramG := imageToHistogram(imgG)
+	*/
 
 	//get a key from map dataset, the key is a label
 	label := getMapKey(datasets[0])
@@ -102,15 +108,21 @@ func knn(datasets []Dataset, imgInput image.Image) string {
 	for i := 0; i < k; i++ {
 		neighbours = append(neighbours, Neighbour{euclideanDist(datasets[0][label][0], histogram), label})
 		neighboursED = append(neighboursED, Neighbour{euclideanDist(datasets[1][label][0], histogramED), label})
-		neighboursG = append(neighboursG, Neighbour{euclideanDist(datasets[2][label][0], histogramG), label})
+		/*
+			neighboursG = append(neighboursG, Neighbour{euclideanDist(datasets[2][label][0], histogramG), label})
+		*/
 	}
 
 	neighbours = distNeighboursFromDataset(datasets[0], neighbours, histogram)
 	neighboursED = distNeighboursFromDataset(datasets[1], neighboursED, histogramED)
-	neighboursG = distNeighboursFromDataset(datasets[2], neighboursG, histogramG)
-
-	//neighbours = append(neighbours, neighboursED...)
-	neighbours = append(neighbours, neighboursG...)
+	/*
+		neighboursG = distNeighboursFromDataset(datasets[2], neighboursG, histogramG)
+	*/
+
+	neighbours = append(neighbours, neighboursED...)
+	/*
+		neighbours = append(neighbours, neighboursG...)
+	*/
 
 	for i := 0; i < len(neighbours); i++ {
 		fmt.Print(neighbours[i].Label + " - ")

readDataset.go

@@ -46,7 +46,9 @@ func readDataset(path string) []Dataset {
 	var resultDatasets []Dataset
 	dataset := make(Dataset)
 	datasetED := make(Dataset)
-	datasetG := make(Dataset)
+	/*
+		datasetG := make(Dataset)
+	*/
 
 	folders, _ := ioutil.ReadDir(path)
 	for _, folder := range folders {
@@ -54,7 +56,9 @@ func readDataset(path string) []Dataset {
 
 		var imgDataset ImgDataset
 		var imgDatasetED ImgDataset
-		var imgDatasetG ImgDataset
+		/*
+			var imgDatasetG ImgDataset
+		*/
 
 		folderFiles, _ := ioutil.ReadDir(path + "/" + folder.Name())
 		for _, file := range folderFiles {
@@ -68,20 +72,26 @@ func readDataset(path string) []Dataset {
 			histogramED := imageToHistogram(imageED)
 			imgDatasetED = append(imgDatasetED, histogramED)
 
-			//get the image with Grayscale filter
-			imageG := Grayscale(image)
-			histogramG := imageToHistogram(imageG)
-			imgDatasetG = append(imgDatasetG, histogramG)
+			/*
+				//get the image with Grayscale filter
+				imageG := Grayscale(image)
+				histogramG := imageToHistogram(imageG)
+				imgDatasetG = append(imgDatasetG, histogramG)
+			*/
 		}
 
 		//add the foldername to the Dataset map
 		dataset[folder.Name()] = imgDataset
 		datasetED[folder.Name()] = imgDatasetED
-		datasetG[folder.Name()] = imgDatasetG
+		/*
+			datasetG[folder.Name()] = imgDatasetG
+		*/
 	}
 
 	resultDatasets = append(resultDatasets, dataset)
 	resultDatasets = append(resultDatasets, datasetED)
-	resultDatasets = append(resultDatasets, datasetG)
+	/*
+		resultDatasets = append(resultDatasets, datasetG)
+	*/
 	return resultDatasets
 }

server.go

@@ -74,6 +74,7 @@ func NewImage(w http.ResponseWriter, r *http.Request) {
 	_, handler, err := r.FormFile("file")
 	check(err)
 
+	fmt.Println(handler.Filename)
 	img := readImage(handler.Filename)
 	//histogram := imageToHistogram(img)
 	result := knn(datasets, img)

test.sh

@@ -1,24 +1,24 @@
 echo "sending leopard to server"
 echo "server response:"
-curl -F file=@./leop2.jpg http://127.0.0.1:3055/image
+curl -F file=@./testleopard1.png http://127.0.0.1:3055/image
 echo ""
 
 echo "sending leopard to server"
 echo "server response:"
-curl -F file=@./leopardtest2.jpg http://127.0.0.1:3055/image
+curl -F file=@./testleopard2.png http://127.0.0.1:3055/image
 echo ""
 
-echo "sending laptop to server"
+echo "sending leopard to server"
 echo "server response:"
-curl -F file=@./laptoptest.jpg http://127.0.0.1:3055/image
+curl -F file=@./testleopard3.png http://127.0.0.1:3055/image
 echo ""
 
 echo "sending leopard to server"
 echo "server response:"
-curl -F file=@./l1.jpg http://127.0.0.1:3055/image
+curl -F file=@./testleopard4.png http://127.0.0.1:3055/image
 echo ""
 
-echo "sending leopard to server"
+echo "sending laptop to server"
 echo "server response:"
-curl -F file=@./l2.jpg http://127.0.0.1:3055/image
+curl -F file=@./testlaptop1.png http://127.0.0.1:3055/image
 echo ""