Sebelum secara resmi menambahkan image ke cloud recognition (CRS) image library, best practice adalah mengevaluasi kualitasnya terlebih dahulu.
Jika recognizable area pada target image terlalu sedikit, seperti white wall atau solid color block, atau texture terlalu sederhana, recognition success rate akan turun secara signifikan. Bab ini menjelaskan rating mechanism CRS secara detail untuk membantu Anda memilih material AR recognition berkualitas tinggi.
Kami terutama memperhatikan dua comprehensive metrics berikut. Keduanya memiliki API endpoint terpisah yang memberikan comprehensive rating:
Metrics ini melakukan rating dari dimensi image algorithm, dan setiap metric tetap diberikan dari 0 sampai 4 berdasarkan tingkat kesulitan.
Setiap target image dalam database memiliki detailed rating pada detailnya. Anda dapat memperoleh target image properties melalui API untuk melihatnya. Anda juga dapat melihatnya melalui EasyAR cloud recognition management.
Seperti pada gambar, halaman detail memiliki dua core comprehensive metrics, dan pentagon menampilkan lima detailed metrics.
Saat membangun automated upload backend, disarankan memanggil rating endpoint sebelum upload resmi.
- Konversi gambar target lokal ke Base64 (macOS / Linux) terlebih dahulu, dan simpan hasilnya ke image_base64.txt
base64 -i ./target.jpg | tr -d '\n' > image_base64.txt
- Ganti placeholder dengan parameter sebenarnya, lalu jalankan skrip curl
- Your-Server-side-URL → API Host sebenarnya
- Your-Token → API Key Authorization Token sebenarnya
- Your-CRS-AppId → appId Anda
curl -X POST "https://<Your-Server-side-URL>/grade/detail" \
-H "Content-Type: application/json" \
-H "Authorization: <YOUR-TOKEN>" \
-d '{
"appId": "<Your-CRS-AppId>",
"image": "'"$(cat image_base64.txt)"'"
}'
Unduh kode contoh Java
Impor proyek melalui Maven
Step 1. Buka file kode terkait Grade.java
Step 2. Ubah variabel global dan ganti dengan parameter autentikasi dalam checklist persiapan Anda
- CRS AppId
- API Key / API Secret
- Server-end URL
- IMAGE_PATH: file gambar target yang akan diunggah
import okhttp3.*;
import org.json.JSONObject;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Base64;
import java.util.HashMap;
import java.util.Map;
public class Grade {
private static final String TARGET_MGMT_URL = "http://cn1.crs.easyar.com:8888";
private static final String CRS_APPID = "--here is your CRS AppId--";
private static final String API_KEY = "--here is your API Key--";
private static final String API_SECRET = "--here is your API Secret--";
private static final String IMAGE_PATH = "test_target_image.jpg";
enum GradeType {
DETAIL,
DETECTION,
TRACKING
}
private static final Map<GradeType, String> GRADE_URL = new HashMap<GradeType, String>(){
{
put(GradeType.DETAIL, "/grade/detail") ;
put(GradeType.DETECTION, "/grade/detection") ;
put(GradeType.TRACKING, "/grade/tracking") ;
}
};
public String grade(Auth auth, String imgPath, GradeType gradeType) throws IOException {
final Path mImagePath = Paths.get(imgPath);
JSONObject params = new JSONObject().put("image", Base64.getEncoder().encodeToString(
Files.readAllBytes(mImagePath)
));
Auth.signParam(params, auth.getAppId(), auth.getApiKey(), auth.getApiSecret());
RequestBody requestBody = FormBody.create(MediaType.parse("application/json; charset=utf-8")
, params.toString());
Request request = new Request.Builder()
.url(auth.getCloudURL() + GRADE_URL.get(gradeType))
.post(requestBody)
.build();
return new OkHttpClient.Builder().build().newCall(request).execute().body().string();
}
public static void main(String[] args) throws IOException {
Auth accessInfo = new Auth(CRS_APPID, API_KEY, API_SECRET, TARGET_MGMT_URL);
System.out.println("================== grade details ==================");
System.out.println(new Grade().grade(accessInfo, IMAGE_PATH, GradeType.DETAIL));
System.out.println("================== grade for detection ==================");
JSONObject gradeResp = new JSONObject(new Grade().grade(accessInfo, IMAGE_PATH, GradeType.DETECTION));
System.out.println("Detection grade: " + gradeResp.getJSONObject(Common.KEY_RESULT).get(Common.KEY_GRADE));
System.out.println("================== grade for tracking =================== ");
gradeResp = new JSONObject(new Grade().grade(accessInfo, IMAGE_PATH, GradeType.TRACKING));
System.out.println("Tracking grade: " + gradeResp.getJSONObject(Common.KEY_RESULT).get(Common.KEY_GRADE));
}
}
Step 3. Jalankan Main
Unduh sample code NodeJS
Step 1. Konfigurasi key file keys.json
- CRS AppId
- API Key / API Secret
{
"appId": "--here is your appId for CRS App Instance for SDK 4--",
"apiKey": "--here is your api key which is create from website and which has crs permission--",
"apiSecret": "--here is your api secret which is create from website--"
}
Step 2. Jalankan dengan menentukan test image, key file, dan Server-end URL
node bin/grade test.jpeg -t <Server-end-URL> -c keys.json
var argv = require('yargs')
.usage('Usage: $0 [image] -t [host] -c [keys]')
.demand(1)
.default('t', 'http://localhost:8888').alias('t', 'host')
.default('c', 'keys.json').alias('c', 'keys')
.help('h').alias('h', 'help')
.epilog('copyright 2015, sightp.com')
.argv;
var fs = require('fs');
var imageFn = argv._[0];
var host = argv.host;
var keys = JSON.parse(fs.readFileSync(argv.keys));
var farmer = require('../farmer')(host, keys);
farmer.getTrackingGrade({
'image': fs.readFileSync(imageFn).toString('base64')
})
.then(function(resp) {
console.log(resp);
})
.fail(function(err) {
console.log(err);
});
Unduh kode contoh PHP
Step 1. Buka kode masuk demo.php
Step 2. Ubah variabel global dan ganti dengan parameter autentikasi dalam daftar yang telah disiapkan
- CRS AppId
- API Key / API Secret
- Server-end URL
- imageFilePath : path file gambar target yang akan diunggah
<?php
include 'EasyARClientSdkCRS.php';
$apiKey = 'API Key';
$apiSecret = 'API Secret';
$crsAppId = 'CRS AppId'
$crsCloudUrl = 'https://cn1-crs.easyar.com';
$imageFilePath = '1.jpg'
$sdk = new EasyARClientSdkCRS($apiKey, $apiSecret, $crsAppId, $crsCloudUrl);
$image = base64_encode(file_get_contents($imageFilePath));
$rs = $sdk->detection($image);
if ($rs->statusCode == 0) {
print_r($rs->result->grade);
} else {
print_r($rs);
}
Step 3. Jalankan php demo.php
Buat file kode terkait grade.py, ubah global variables, lalu jalankan
pip install requests
python grade.py
import time
import hashlib
import requests
import base64
# --- Global Configuration ---
API_KEY = "YOUR_API_KEY"
API_SECRET = "YOUR_API_SECRET"
APP_ID = "YOUR_APP_ID"
HOST = "https://crs-cn1.easyar.com"
IMAGE_PATH = "test.jpg"
def main():
# 1. Read and encode image
with open(IMAGE_PATH, "rb") as f:
image_base64 = base64.b64encode(f.read()).decode('utf-8')
timestamp = str(int(time.time() * 1000))
# 2. Build parameter dictionary (including image)
params = {
'apiKey': API_KEY,
'appId': APP_ID,
'timestamp': timestamp,
'image': image_base64
}
# 3. Sort by key and concatenate
sorted_keys = sorted(params.keys())
builder = "".join([f"{k}{params[k]}" for k in sorted_keys])
builder += API_SECRET
# 4. Generate SHA256 Signature
signature = hashlib.sha256(builder.encode('utf-8')).hexdigest()
# 5. Send POST request
payload = {**params, "signature": signature, "timestamp": int(timestamp)}
response = requests.post(f"{HOST}/grade/detection", json=payload)
print(f"Status: {response.status_code}")
print(f"Response: {response.text}")
if __name__ == "__main__":
main()
Buat file kode terkait main.go, ubah variabel global, lalu jalankan:
go run main.go
main.go:
package main
import (
"bytes"
"crypto/sha256"
"encoding/base64"
"encoding/json"
"fmt"
"io"
"net/http"
"os"
"sort"
"strconv"
"time"
)
var (
ApiKey = "YOUR_API_KEY"
ApiSecret = "YOUR_API_SECRET"
AppId = "YOUR_APP_ID"
Host = "https://crs-cn1.easyar.com"
ImagePath = "test.jpg"
)
func main() {
fileData, _ := os.ReadFile(ImagePath)
imgBase64 := base64.StdEncoding.EncodeToString(fileData)
tsInt := time.Now().UnixNano() / 1e6
tsStr := strconv.FormatInt(tsInt, 10)
params := map[string]string{
"apiKey": ApiKey,
"appId": AppId,
"timestamp": tsStr,
"image": imgBase64,
}
keys := make([]string, 0, len(params))
for k := range params { keys = append(keys, k) }
sort.Strings(keys)
var builder bytes.Buffer
for _, k := range keys {
builder.WriteString(k)
builder.WriteString(params[k])
}
builder.WriteString(ApiSecret)
signature := fmt.Sprintf("%x", sha256.Sum256(builder.Bytes()))
payload := map[string]interface{}{
"image": imgBase64,
"apiKey": ApiKey,
"appId": AppId,
"timestamp": tsInt,
"signature": signature,
}
jsonBytes, _ := json.Marshal(payload)
resp, _ := http.Post(Host+"/grade/detection", "application/json", bytes.NewBuffer(jsonBytes))
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Printf("Response: %s\n", string(body))
}
Tambahkan dependensi reqwest, tokio, sha2, dan hex di Cargo.toml.
Jalankan cargo run.
use sha2::{Sha256, Digest};
use std::collections::BTreeMap;
use std::time::{SystemTime, UNIX_EPOCH};
use base64::{Engine as _, engine::general_purpose};
const API_KEY: &str = "YOUR_API_KEY";
const API_SECRET: &str = "YOUR_API_SECRET";
const APP_ID: &str = "YOUR_APP_ID";
const HOST: &str = "https://crs-cn1.easyar.com";
const IMAGE_PATH: &str = "test.jpg";
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let img_bytes = std::fs::read(IMAGE_PATH)?;
let img_b64 = general_purpose::STANDARD.encode(img_bytes);
let ts_raw = SystemTime::now().duration_since(UNIX_EPOCH)?.as_millis();
let ts_str = ts_raw.to_string();
// 1. Collect params in BTreeMap for automatic sorting
let mut params = BTreeMap::new();
params.insert("apiKey", API_KEY);
params.insert("appId", APP_ID);
params.insert("timestamp", &ts_str);
params.insert("image", &img_b64);
// 2. Build sign string
let mut builder = String::new();
for (k, v) in ¶ms {
builder.push_str(k);
builder.push_str(v);
}
builder.push_str(API_SECRET);
// 3. Hash
let mut hasher = Sha256::new();
hasher.update(builder.as_bytes());
let signature = hex::encode(hasher.finalize());
let mut body = serde_json::Map::new();
body.insert("image".into(), img_b64.into());
body.insert("apiKey".into(), API_KEY.into());
body.insert("appId".into(), APP_ID.into());
body.insert("timestamp".into(), ts_raw.into());
body.insert("signature".into(), signature.into());
let client = reqwest::Client::new();
let res = client.post(format!("{}/grade/detection", HOST))
.json(&body)
.send()
.await?;
println!("Response: {}", res.text().await?);
Ok(())
}
Buat proyek konsol .NET.
dotnet new console
dotnet run
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Net.Http;
using System.Text.Json;
class Program {
static string API_KEY = "YOUR_API_KEY";
static string API_SECRET = "YOUR_API_SECRET";
static string APP_ID = "YOUR_APP_ID";
static string HOST = "https://crs-cn1.easyar.com";
static string IMAGE_PATH = "test.jpg";
static async System.Threading.Tasks.Task Main() {
string timestamp = DateTimeOffset.Now.ToUnixTimeMilliseconds().ToString();
string imageBase64 = Convert.ToBase64String(File.ReadAllBytes(IMAGE_PATH));
// 1. Prepare data for signing
var data = new SortedDictionary<string, string> {
{ "apiKey", API_KEY },
{ "appId", APP_ID },
{ "timestamp", timestamp },
{ "image", imageBase64 }
};
// 2. Concatenate keys and values
StringBuilder sb = new StringBuilder();
foreach (var pair in data) sb.Append(pair.Key).Append(pair.Value);
sb.Append(API_SECRET);
string signature = Sha256(sb.ToString());
// 3. Construct JSON body
var body = new {
image = imageBase64,
apiKey = API_KEY,
appId = APP_ID,
timestamp = long.Parse(timestamp),
signature = signature
};
using var client = new HttpClient();
var content = new StringContent(JsonSerializer.Serialize(body), Encoding.UTF8, "application/json");
var response = await client.PostAsync($"{HOST}/grade/detection", content);
Console.WriteLine($"Response: {await response.Content.ReadAsStringAsync()}");
}
static string Sha256(string str) {
byte[] bytes = SHA256.HashData(Encoding.UTF8.GetBytes(str));
return BitConverter.ToString(bytes).Replace("-", "").ToLower();
}
}
- Lingkungan runtime
- Unity 2020 LTS atau versi lebih baru
- Scripting Backend: Mono atau IL2CPP keduanya dapat digunakan
- API Compatibility Level: .NET Standard 2.1 (direkomendasikan)
Step 1: Menyiapkan file gambar
- Buat direktori di proyek Unity:
Assets/
└── StreamingAssets/
| └── target.jpg
└── Scripts/
└── GrageImage.cs
- Sesuai nama direktori Assets
- Buat script GrageImage.cs dan salin kode contoh di bawah
- Siapkan gambar uji target gambar
using System;
using System.IO;
using System.Text;
using UnityEngine;
using UnityEngine.Networking;
using System.Collections;
public class GrageImage : MonoBehaviour
{
[Header("Config")]
public string apiUrl = "https://Your-Server-end-URL" + "/grade/detection";
public string authorizationToken = "YOUR API KEY AUTH TOKEN";
public string imageFilePath = "target.jpg"; // StreamingAssets
public string crsAppId = "<Your-CRS-AppId>";
private void Start()
{
StartCoroutine(Grade());
}
private IEnumerator Grade()
{
// Read image file（Unity StreamingAssets）
string fullPath = Path.Combine(Application.streamingAssetsPath, imageFilePath);
if (!File.Exists(fullPath))
{
Debug.LogError($"Image file not found: {fullPath}");
yield break;
}
byte[] imageBytes = File.ReadAllBytes(fullPath);
string imageBase64 = Convert.ToBase64String(imageBytes);
TargetRequestBody body = new TargetRequestBody
{
appId = crsAppId,
image = imageBase64,
};
string json = JsonUtility.ToJson(body);
// UnityWebRequest
UnityWebRequest request = new UnityWebRequest(apiUrl, "POST");
byte[] jsonBytes = Encoding.UTF8.GetBytes(json);
request.uploadHandler = new UploadHandlerRaw(jsonBytes);
request.downloadHandler = new DownloadHandlerBuffer();
request.SetRequestHeader("Content-Type", "application/json");
request.SetRequestHeader("Authorization", authorizationToken);
yield return request.SendWebRequest();
if (request.result == UnityWebRequest.Result.Success)
{
Debug.Log("Grade detail success:");
Debug.Log(request.downloadHandler.text);
}
else
{
Debug.LogError("Grade detail failed:");
Debug.LogError(request.error);
Debug.LogError(request.downloadHandler.text);
}
}
[Serializable]
private class TargetRequestBody
{
public string appId;
public string image;
}
}
- Di Unity Editor:
- Buat GameObject kosong
- Beri nama GradeImage
- Seret script GrageImage ke objek tersebut
Step 3: Mengonfigurasi parameter (Inspector)
Step 4: Jalankan
- Klik Play
- Lihat hasil di Console:
- Berhasil: mengembalikan JSON (result berisi objek)
- Gagal: HTTP / informasi error
