Resolving empty pixel issue

examples/python/pigo.go

@@ -24,41 +24,43 @@ func main() {}
 
 //export FindFaces
 func FindFaces(pixels []uint8) uintptr {
-	dets := clusterDetection(pixels, 480, 640)
-	result := make([][]int, len(dets))
+	if len(pixels) > 0 {
+		dets := clusterDetection(pixels, 480, 640)
+		result := make([][]int, len(dets))
 
-	for i := 0; i < len(dets); i++ {
-		if dets[i].Q >= 5.0 {
-			result[i] = append(result[i], dets[i].Row, dets[i].Col, dets[i].Scale)
+		for i := 0; i < len(dets); i++ {
+			if dets[i].Q >= 5.0 {
+				result[i] = append(result[i], dets[i].Row, dets[i].Col, dets[i].Scale)
+			}
 		}
-	}
-	//fmt.Println(dets)
-	fmt.Println(result)
+		//fmt.Println(dets)
+		fmt.Println(result)
 
-	if len(result) > 0 {
-		det := make([]int, 0, len(result))
-		for _, v := range result {
-			det = append(det, v...)
+		if len(result) > 0 {
+			det := make([]int, 0, len(result))
+			for _, v := range result {
+				det = append(det, v...)
+			}
+			det = append([]int{len(result), 0, 0}, det...)
+			fmt.Println(det)
+
+			s := *(*[]int)(unsafe.Pointer(&det))
+			p := uintptr(unsafe.Pointer(&s[0]))
+			return p
+
+			sh := &reflect.SliceHeader{
+				Data: p,
+				Len:  len(result),
+				Cap:  len(result),
+			}
+
+			data := *(*[][]int)(unsafe.Pointer(sh))
+
+			fmt.Println(data)
+
+			runtime.KeepAlive(result)
+			return uintptr(unsafe.Pointer(&data[0]))
 		}
-		det = append([]int{len(result), 0, 0}, det...)
-		fmt.Println(det)
-
-		s := *(*[]int)(unsafe.Pointer(&det))
-		p := uintptr(unsafe.Pointer(&s[0]))
-		return p
-
-		sh := &reflect.SliceHeader{
-			Data: p,
-			Len:  len(result),
-			Cap:  len(result),
-		}
-
-		data := *(*[][]int)(unsafe.Pointer(sh))
-
-		fmt.Println(data)
-
-		runtime.KeepAlive(result)
-		return uintptr(unsafe.Pointer(&data[0]))
 	}
 	return 0
 }