Os bancos de dados Cloud Recognition (CRS) normalmente armazenam um grande volume de imagens alvo. Para facilitar que desenvolvedores localizem e gerenciem esses dados rapidamente, este capítulo descreve a visualização de imagens alvo, a consulta paginada e os detalhes.
Depois de entrar na página de detalhes, você pode visualizar as propriedades completas da imagem alvo, incluindo:
Para desenvolvedores que precisam integrar ao próprio backend, recomenda-se usar REST API para gerenciamento.
Substitua os espaços reservados pelos parâmetros reais e execute o script curl
- Your-Server-side-URL → API Host real
- Your-Token → API Key Authorization Token real
- Your-CRS-AppId → seu appId
curl -X GET "https://<Your Server-side-URL>/targets/infos?appId=<Your-CRS-AppId>" \
-H "Content-Type: application/json" \
-H "Authorization: <Your-Token>"
Baixe o código de exemplo Java
Importe o projeto com Maven
Step 1. Abra o arquivo de código relacionado ListTargets.java.
Step 2. Modifique as variáveis globais e substitua-as pelos parâmetros de autenticação na lista preparada.
- CRS AppId
- API Key / API Secret
- TARGET_MGMT_URL → Server-end URL
public class ListTargets {
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--";
public String list(Auth auth) throws IOException {
OkHttpClient client = new OkHttpClient.Builder().build();
JSONObject params = new JSONObject();
Auth.signParam(params, auth.getAppId(), auth.getApiKey(), auth.getApiSecret());
okhttp3.Request request = new okhttp3.Request.Builder()
.url(auth.getCloudURL() + "/targets/infos?"+ Common.toParam(params))
.get()
.build();
Response response = client.newCall(request).execute();
return response.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(new ListTargets().list(accessInfo));
}
}
Step 3. Execute Main
Baixe o sample code NodeJS.
Step 1. Configure o arquivo de chaves 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. Execute especificando o arquivo de chaves e o Server-end URL.
node bin/getTargets -t <Server-end-URL> -c keys.json
Se precisar alterar a estratégia de pagination, passe os parâmetros de pagination de getTargets.
- 'pageSize': tamanho da página
- 'pageNum': número da página
var argv = require('yargs')
.usage('Usage: $0 [targetId] -t [host] -c [keys]')
.demand(0)
.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 host = argv.host;
var keys = JSON.parse(fs.readFileSync(argv.keys));
var farmer = require('../farmer')(host, keys.appKey, keys.appSecret);
farmer.getTargets({
'pageSize': 5,
'pageNum': 1,
})
.then(function(resp) {
console.log(resp.result.targets);
})
.fail(function(err) {
console.log(err);
});
getTargets chama a API do serviço cloud. O sample code está em farmer.js.
function getTargetsByPage(pageNum,pageSize) {
return Q.promise(function(resolve, reject) {
request.get(host + '/targets/infos?pageNum=' + pageNum + '&pageSize=' + pageSize)
.query(auth.signParams(keypair, {
"pageNum":pageNum,
"pageSize":pageSize
}))
.end(done(resolve, reject));
});
}
Baixe o código de exemplo PHP.
Step 1. Abra o código de entrada demo.php.
Step 2. Modifique as variáveis globais e substitua-as pelos parâmetros de autenticação na lista preparada.
- CRS AppId
- API Key / API Secret
- Server-end URL
<?php
include 'EasyARClientSdkCRS.php';
$apiKey = 'API Key';
$apiSecret = 'API Secret';
$crsAppId = 'CRS AppId'
$crsCloudUrl = 'https://cn1-crs.easyar.com';
$pageNum = 1;
$pageSize = 5;
$sdk = new EasyARClientSdkCRS($apiKey, $apiSecret, $crsAppId, $crsCloudUrl);
$rs = $sdk->targetsV3($pageNum, $pageSize);
if ($rs->statusCode == 0) {
print_r($rs->result);
} else {
print_r($rs);
}
Step 3. Execute php demo.php.
Crie o arquivo de codigo relacionado list_targets.py, modifique as variaveis globais e execute
pip install requests
python list_targets.py
import time
import hashlib
import requests
# --- Global Configuration ---
API_KEY = "YOUR_API_KEY"
API_SECRET = "YOUR_API_SECRET"
APP_ID = "YOUR_APP_ID"
HOST = "https://crs-cn1.easyar.com"
def main():
timestamp = str(int(time.time() * 1000))
params = {
'apiKey': API_KEY,
'appId': APP_ID,
'timestamp': timestamp
}
# Signature: Sort keys -> Concat -> Append Secret -> SHA256
sorted_keys = sorted(params.keys())
sign_str = "".join([f"{k}{params[k]}" for k in sorted_keys]) + API_SECRET
signature = hashlib.sha256(sign_str.encode('utf-8')).hexdigest()
url = f"{HOST}/targets/infos"
params['signature'] = signature
print(f"Requesting GET {url}...")
response = requests.get(url, params=params)
print(f"Response: {response.text}")
if __name__ == "__main__":
main()
Crie o arquivo de código relacionado main.go, modifique as variáveis globais e execute
go run main.go
main.go:
package main
import (
"crypto/sha256"
"fmt"
"io"
"net/http"
"sort"
"strconv"
"time"
)
// --- Global Configuration ---
var (
ApiKey = "YOUR_API_KEY"
ApiSecret = "YOUR_API_SECRET"
AppId = "YOUR_APP_ID"
Host = "https://crs-cn1.easyar.com"
)
func main() {
ts := strconv.FormatInt(time.Now().UnixNano()/1e6, 10)
params := map[string]string{
"apiKey": ApiKey,
"appId": AppId,
"timestamp": ts,
}
keys := make([]string, 0, len(params))
for k := range params { keys = append(keys, k) }
sort.Strings(keys)
builder := ""
for _, k := range keys { builder += k + params[k] }
builder += ApiSecret
signature := fmt.Sprintf("%x", sha256.Sum256([]byte(builder)))
url := fmt.Sprintf("%s/targets/infos?apiKey=%s&appId=%s×tamp=%s&signature=%s",
Host, ApiKey, AppId, ts, signature)
resp, _ := http.Get(url)
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Printf("Response: %s\n", string(body))
}
Adicione as dependências reqwest, tokio, sha2 e hex em Cargo.toml.
Execute cargo run.
use sha2::{Sha256, Digest};
use std::collections::BTreeMap;
use std::time::{SystemTime, UNIX_EPOCH};
// --- Global Configuration ---
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";
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let ts = SystemTime::now().duration_since(UNIX_EPOCH)?.as_millis().to_string();
let mut params = BTreeMap::new();
params.insert("apiKey", API_KEY);
params.insert("appId", APP_ID);
params.insert("timestamp", &ts);
let mut sign_str = String::new();
for (k, v) in ¶ms {
sign_str.push_str(k);
sign_str.push_str(v);
}
sign_str.push_str(API_SECRET);
let mut hasher = Sha256::new();
hasher.update(sign_str.as_bytes());
let signature = hex::encode(hasher.finalize());
let url = format!("{}/targets/infos?apiKey={}&appId={}×tamp={}&signature={}",
HOST, API_KEY, APP_ID, ts, signature);
let res = reqwest::get(url).await?;
println!("Response: {}", res.text().await?);
Ok(())
}
Crie um projeto de console .NET.
dotnet new console
dotnet run
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Net.Http;
class Program {
// --- Global Configuration ---
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 async System.Threading.Tasks.Task Main() {
string timestamp = DateTimeOffset.Now.ToUnixTimeMilliseconds().ToString();
var dict = new SortedDictionary<string, string> {
{ "apiKey", API_KEY },
{ "appId", APP_ID },
{ "timestamp", timestamp }
};
StringBuilder sb = new StringBuilder();
foreach (var kv in dict) sb.Append(kv.Key).Append(kv.Value);
sb.Append(API_SECRET);
string signature = Sha256(sb.ToString());
using var client = new HttpClient();
string query = string.Join("&", dict.Select(x => $"{x.Key}={x.Value}")) + $"&signature={signature}";
string url = $"{HOST}/targets/infos?{query}";
var response = await client.GetAsync(url);
Console.WriteLine($"Result: {await response.Content.ReadAsStringAsync()}");
}
static string Sha256(string str) {
byte[] bytes = SHA256.HashData(Encoding.UTF8.GetBytes(str));
return BitConverter.ToString(bytes).Replace("-", "").ToLower();
}
}
- Ambiente de execução
- Unity 2020 LTS ou posterior
- Scripting Backend: Mono ou IL2CPP são aceitos
- API Compatibility Level: .NET Standard 2.1 (recomendado)
Step 1: Preparar o arquivo de imagem
- Crie um diretório no projeto Unity:
Assets/
└── Scripts/
└── ListImageTarget.cs
using System.Collections;
using UnityEngine;
using UnityEngine.Networking;
public class ListImageTarget : MonoBehaviour
{
[Header("Config")]
public string apiBaseUrl = "https://Your-Server-end-URL";
public string authorizationToken = "YOUR API KEY AUTH TOKEN";
public string crsAppId = "CRS-AppId";
public int pageSize = 5;
public int pageNum = 1;
private void Start()
{
StartCoroutine(ListTarget());
}
private IEnumerator ListTarget()
{
string url =
$"{apiBaseUrl}/targets/infos?appId={crsAppId}&pageSize={pageSize}&pageNum={pageNum}";
UnityWebRequest request = UnityWebRequest.Get(url);
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("List target success:");
Debug.Log(request.downloadHandler.text);
}
else
{
Debug.LogError("List target failed:");
Debug.LogError(request.error);
Debug.LogError(request.downloadHandler.text);
}
}
}
Step 3: Configurar parâmetros (Inspector)
Modifique no painel Inspector:
- Api Url
- Authorization Token
- Crs App Id
- page size
- page num
Basta modificar esses itens para executar, preenchendo os parâmetros preparados na checklist de preparação
Step 4: Executar
- Clique em Play
- Veja o resultado em Console:
- Sucesso: retorna JSON (incluindo targetId)
- Falha: HTTP / informações de erro
