车辆属性识别
更新时间:2024-06-17
该接口已停止更新,为避免影响您的业务使用,建议尽快安排业务迁移
接口描述
传入单帧图像,检测图片中所有车辆,返回每辆车的类型和坐标位置,可识别小汽车、卡车、巴士、三轮车、两轮车、车牌,并针对车辆识别24种外观属性,包括:是否有车窗雨眉、是否有车顶架、副驾驶是否有人、车身颜色、特种车类型、渣土车满载等。
当前主要适用于普通监控场景,如道路、停车场等,无人机高空拍摄的图片,因车辆目标较小,识别效果可能欠佳,后续会扩展支持超高空拍摄场景,如有该场景的需求,请通过QQ群或提交工单,详细沟通测试情况。
普通监控场景示例图片:
在线调试
您可以在 示例代码中心 中调试该接口,可进行签名验证、查看在线调用的请求内容和返回结果、示例代码的自动生成。
请求说明
请求示例
HTTP 方法:POST
请求URL:https://aip.baidubce.com/rest/2.0/image-classify/v2/vehicle_attr
URL参数:
参数 | 值 |
---|---|
access_token | 通过API Key和Secret Key获取的access_token,参考“Access Token获取” |
Header如下:
参数 | 值 |
---|---|
Content-Type | application/x-www-form-urlencoded |
Body中放置请求参数,参数详情如下:
请求参数
参数 | 是否必选 | 类型 | 取值范围 | 说明 |
---|---|---|---|---|
image | 和url二选一 | string | 0-255彩色图像(base64编码) | 图像数据,Base64编码字符串,不超过4M。最短边至少50px,最长边最多4096px。支持图片格式:jpg/bmp/png。 注意:图片的base64编码是不包含图片头的,如(data:image/jpg;base64,) |
url | 和image二选一 | string | - | 图片完整URL,URL长度不超过1024字节,URL对应的图片base64编码后大小不超过4M,最短边至少50px,最长边最大4096px,支持jpg/png/bmp格式,当image字段存在时url字段失效。 |
type | 否 | string | 是否选定某些属性输出对应的信息,可从24种输出属性中任选若干,用英文逗号分隔(例如top_holder,skylight,window_rain_eyebrow)。默认输出全部属性 |
附:type字段说明
ID | type | 说明 | 类别数 | 类别 |
---|---|---|---|---|
0 | top_holder | 是否有车顶架 | 2 | 是否有车顶架 |
1 | skylight | 是否有天窗 | 2 | 无天窗、有天窗 |
2 | window_rain_eyebrow | 是否有车窗雨眉 | 2 | 无车窗雨眉、有车窗雨眉 |
3 | vehicle_front_item_placeitems | 是否有车前摆放物 | 2 | 无车前摆放物、有车前摆放物 |
4 | vehicle_front_item_pendant | 是否有后视镜挂件 | 2 | 无后视镜挂件、有后视镜挂件 |
5 | has_copilot | 副驾驶位是否有人 | 2 | 副驾驶无人、副驾驶有人 |
6 | safety_belt_copilot | 副驾驶安全带是否系带 | 2 | 副驾驶未系安全带、副驾驶系安全带 |
7 | safety_belt_pilot | 驾驶员安全带是否系带 | 2 | 驾驶员安全带是否系带 |
8 | sunvisor_pilot | 驾驶员遮阳板是否放下 | 2 | 驾驶员遮阳板未放下、驾驶员遮阳板放下 |
9 | sunvisor_copilot | 副驾驶遮阳板是否放下 | 2 | 副驾驶遮阳板未放下、副驾驶遮阳板放下 |
10 | direction | 车辆行驶方向 | 4 | 车辆正向行驶、车辆背向行驶、车辆左侧行驶、车辆右侧行驶 |
11 | has_plate | 是否无牌车 | 2 | 有车牌、无车牌 |
12 | plate_stained | 是否污损车牌 | 2 | 车牌无污损、车牌污损 |
13 | dangerous_vehicle | 是否为危化品车 | 2 | 非危险品车、危险品车 |
14 | slag_vehicle | 是否为渣土车 | 2 | 非渣土车、渣土车 |
15 | slag_vehicle_cover | 渣土车是否盖板 | 2 | 渣土车未盖板、渣土车苫盖 |
16 | vehicle_inspection | 是否有年检标 | 2 | 无年检标、有年检标 |
17 | vehicle_color | 车身颜色 | 12 | 车身颜色白色;车身颜色灰色;车身颜色黄色;车身颜色粉色;车身颜色红色;车身颜色紫色;车身颜色绿色;车身颜色蓝色;车身颜色棕色;车身颜色黑色;车身颜色橙色;车身颜色混色 |
18 | special_vehicle | 特种车类型 | 9 | 普通车、警车、消防车、救护车、施工工程车、工程抢险车、洒水车、搅拌车、校车 |
19 | vehicle_shielding | 遮挡 | 3 | 无遮挡、0-50%遮挡、50-100%遮挡 |
20 | slag_full_loaded | 渣土车满载 | 2 | 渣土车未满载、渣土车满载 |
21 | slag_refit | 渣土车改装 | 2 | 渣土车未改装、渣土车改装 |
22 | plate_cover | 车牌遮挡 | 2 | 车牌未遮挡、车牌遮挡 |
23 | vehicle_class | 车辆类型识别 | 3 | 两轮车(主要是摩托)、三轮车、四轮车 |
请求代码示例
提示一:使用示例代码前,请记得替换其中的示例Token、图片地址或Base64信息。
提示二:部分语言依赖的类或库,请在代码注释中查看下载地址。
curl -i -k 'https://aip.baidubce.com/rest/2.0/image-classify/v2/vehicle_attr?access_token=【调用鉴权接口获取的token】' --data 'image=【图片Base64编码,需UrlEncode】' -H 'Content-Type:application/x-www-form-urlencoded'
<?php
/**
* 发起http post请求(REST API), 并获取REST请求的结果
* @param string $url
* @param string $param
* @return - http response body if succeeds, else false.
*/
function request_post($url = '', $param = '')
{
if (empty($url) || empty($param)) {
return false;
}
$postUrl = $url;
$curlPost = $param;
// 初始化curl
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $postUrl);
curl_setopt($curl, CURLOPT_HEADER, 0);
// 要求结果为字符串且输出到屏幕上
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
// post提交方式
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $curlPost);
// 运行curl
$data = curl_exec($curl);
curl_close($curl);
return $data;
}
$token = '[调用鉴权接口获取的token]';
$url = 'https://aip.baidubce.com/rest/2.0/image-classify/v2/vehicle_attr?access_token=' . $token;
$img = file_get_contents('[本地文件路径]');
$img = base64_encode($img);
$bodys = array(
'image' => $img
);
$res = request_post($url, $bodys);
var_dump($res);
package com.baidu.ai.aip;
import com.baidu.ai.aip.utils.Base64Util;
import com.baidu.ai.aip.utils.FileUtil;
import com.baidu.ai.aip.utils.HttpUtil;
import java.net.URLEncoder;
/**
* 车辆分析—车辆属性识别
*/
public class VehicleAttr {
/**
* 重要提示代码中所需工具类
* FileUtil,Base64Util,HttpUtil,GsonUtils请从
* https://ai.baidu.com/file/658A35ABAB2D404FBF903F64D47C1F72
* https://ai.baidu.com/file/C8D81F3301E24D2892968F09AE1AD6E2
* https://ai.baidu.com/file/544D677F5D4E4F17B4122FBD60DB82B3
* https://ai.baidu.com/file/470B3ACCA3FE43788B5A963BF0B625F3
* 下载
*/
public static String vehicle_attr() {
// 请求url
String url = "https://aip.baidubce.com/rest/2.0/image-classify/v2/vehicle_attr";
try {
// 本地文件路径
String filePath = "[本地文件路径]";
byte[] imgData = FileUtil.readFileByBytes(filePath);
String imgStr = Base64Util.encode(imgData);
String imgParam = URLEncoder.encode(imgStr, "UTF-8");
String param = "image=" + imgParam;
// 注意这里仅为了简化编码每一次请求都去获取access_token,线上环境access_token有过期时间, 客户端可自行缓存,过期后重新获取。
String accessToken = "[调用鉴权接口获取的token]";
String result = HttpUtil.post(url, accessToken, param);
System.out.println(result);
return result;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public static void main(String[] args) {
VehicleAttr.vehicle_attr();
}
}
# encoding:utf-8
import requests
import base64
'''
车辆分析—车辆属性识别
'''
request_url = "https://aip.baidubce.com/rest/2.0/image-classify/v2/vehicle_attr"
# 二进制方式打开图片文件
f = open('[本地文件]', 'rb')
img = base64.b64encode(f.read())
params = {"image":img}
access_token = '[调用鉴权接口获取的token]'
request_url = request_url + "?access_token=" + access_token
headers = {'content-type': 'application/x-www-form-urlencoded'}
response = requests.post(request_url, data=params, headers=headers)
if response:
print (response.json())
#include <iostream>
#include <curl/curl.h>
// libcurl库下载链接:https://curl.haxx.se/download.html
// jsoncpp库下载链接:https://github.com/open-source-parsers/jsoncpp/
const static std::string request_url = "https://aip.baidubce.com/rest/2.0/image-classify/v2/vehicle_attr";
static std::string vehicle_attr_result;
/**
* curl发送http请求调用的回调函数,回调函数中对返回的json格式的body进行了解析,解析结果储存在全局的静态变量当中
* @param 参数定义见libcurl文档
* @return 返回值定义见libcurl文档
*/
static size_t callback(void *ptr, size_t size, size_t nmemb, void *stream) {
// 获取到的body存放在ptr中,先将其转换为string格式
vehicle_attr_result = std::string((char *) ptr, size * nmemb);
return size * nmemb;
}
/**
* 车辆分析—车辆属性识别
* @return 调用成功返回0,发生错误返回其他错误码
*/
int vehicle_attr(std::string &json_result, const std::string &access_token) {
std::string url = request_url + "?access_token=" + access_token;
CURL *curl = NULL;
CURLcode result_code;
int is_success;
curl = curl_easy_init();
if (curl) {
curl_easy_setopt(curl, CURLOPT_URL, url.data());
curl_easy_setopt(curl, CURLOPT_POST, 1);
curl_httppost *post = NULL;
curl_httppost *last = NULL;
curl_formadd(&post, &last, CURLFORM_COPYNAME, "image", CURLFORM_COPYCONTENTS, "【base64_img】", CURLFORM_END);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, post);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, callback);
result_code = curl_easy_perform(curl);
if (result_code != CURLE_OK) {
fprintf(stderr, "curl_easy_perform() failed: %s\n",
curl_easy_strerror(result_code));
is_success = 1;
return is_success;
}
json_result = vehicle_attr_result;
curl_easy_cleanup(curl);
is_success = 0;
} else {
fprintf(stderr, "curl_easy_init() failed.");
is_success = 1;
}
return is_success;
}
using System;
using System.IO;
using System.Net;
using System.Text;
using System.Web;
namespace com.baidu.ai
{
public class VehicleAttr
{
// 车辆分析—车辆属性识别
public static string vehicle_attr()
{
string token = "[调用鉴权接口获取的token]";
string host = "https://aip.baidubce.com/rest/2.0/image-classify/v2/vehicle_attr?access_token=" + token;
Encoding encoding = Encoding.Default;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(host);
request.Method = "post";
request.KeepAlive = true;
// 图片的base64编码
string base64 = getFileBase64("[本地图片文件]");
String str = "image=" + HttpUtility.UrlEncode(base64);
byte[] buffer = encoding.GetBytes(str);
request.ContentLength = buffer.Length;
request.GetRequestStream().Write(buffer, 0, buffer.Length);
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default);
string result = reader.ReadToEnd();
Console.WriteLine("车辆分析—车辆属性识别:");
Console.WriteLine(result);
return result;
}
public static String getFileBase64(String fileName) {
FileStream filestream = new FileStream(fileName, FileMode.Open);
byte[] arr = new byte[filestream.Length];
filestream.Read(arr, 0, (int)filestream.Length);
string baser64 = Convert.ToBase64String(arr);
filestream.Close();
return baser64;
}
}
}
返回说明
返回参数 以type选定top_holder为例:
字段 | 是否必选 | 类型 | 说明 |
---|---|---|---|
vehicle_info | 是 | object数组 | 每个框的具体信息 |
vehicle_num | 是 | int | 检测到的车辆框数目 |
+location | 是 | object | 检测到的车辆框位置 |
++left | 是 | int | 检测框左坐标 |
++top | 是 | int | 检测框顶坐标 |
++width | 是 | int | 检测框宽度 |
++height | 是 | int | 检测框高度 |
++cls | 是 | int | 检测主体类型,返回int类型的id,id对应内容如下:1:小汽车(car);2:卡车(truck);3:巴士(bus);4:二轮车-主要为摩托车,含自行车(motorbike);5:三轮车(tricycle);6:车牌(carplate);-1:图片中未检测到车辆(无检测结果) |
++score | 是 | float | 车辆置信度 |
+attributes | 是 | object数组 | 车辆属性内容(这里仅列举其中一个进行说明,全部24个属性见属性字段说明) |
++top_holder | 否 | object | 车顶架 |
++++name | 否 | string | 无车顶架、有车顶架 |
++++score | 否 | float | 对应概率分数 |
返回示例
未检测到任何车辆:
{
"log_id": 1522102386508316465,
"vehicle_info": [
{
"attributes": {},
"location": {
"score": 0,
"top": 0,
"left": 0,
"width": 0,
"cls": -1,
"height": 0
}
}
],
"vehicle_num": 0
}
检测到2辆小汽车:
{
"log_id": 1522103149454741267,
"vehicle_info": [
{
"attributes": {
"vehicle_color": {
"score": 0.9207834601402283,
"name": "车身颜色白色"
},
"slag_full_loaded": {
"score": 0.9757698774337769,
"name": "渣土车未满载"
},
"safety_belt_copilot": {
"score": 0.9999989867210388,
"name": "副驾驶系安全带"
},
"vehicle_front_item_placeitems": {
"score": 0.7926750183105469,
"name": "有车前摆放物"
},
"vehicle_inspection": {
"score": 0.5232551693916321,
"name": "有年检标"
},
"skylight": {
"score": 0.7827605605125427,
"name": "无天窗"
},
"dangerous_vehicle": {
"score": 0.9992908239364624,
"name": "非危险品车"
},
"vehicle_shielding": {
"score": 0.9654262661933899,
"name": "无遮挡"
},
"sunvisor_copilot": {
"score": 0.9938165545463562,
"name": "副驾驶遮阳板未放下"
},
"safety_belt_pilot": {
"score": 0.5320025682449341,
"name": "驾驶员未系安全带"
},
"window_rain_eyebrow": {
"score": 0.9973089694976807,
"name": "无车窗雨眉"
},
"sunvisor_pilot": {
"score": 0.9889488220214844,
"name": "驾驶员遮阳板未放下"
},
"plate_stained": {
"score": 0.9904413223266602,
"name": "车牌无污损"
},
"slag_vehicle": {
"score": 0.9885181784629822,
"name": "非渣土车"
},
"vehicle_front_item_pendant": {
"score": 0.9655022621154785,
"name": "无后视镜挂件"
},
"has_plate": {
"score": 0.7274292707443237,
"name": "有车牌"
},
"vehicle_class": {
"score": 0.8929595947265625,
"name": "四轮车"
},
"special_vehicle": {
"score": 0.8439596891403198,
"name": "普通车"
},
"plate_cover": {
"score": 0.9869874715805054,
"name": "车牌未遮挡"
},
"top_holder": {
"score": 0.9910229444503784,
"name": "无车顶架"
},
"slag_vehicle_cover": {
"score": 0.5242087244987488,
"name": "渣土车未盖板"
},
"slag_refit": {
"score": 0.9636361598968506,
"name": "渣土车未改装"
},
"has_copilot": {
"score": 0.9043570756912231,
"name": "副驾驶无人"
},
"direction": {
"score": 0.8187354803085327,
"name": "车辆正向行驶"
}
},
"location": {
"score": 0.9702600240707397,
"top": 170,
"left": 419,
"width": 80,
"cls": 1,
"height": 86
}
},
{
"attributes": {
"vehicle_color": {
"score": 0.9032244086265564,
"name": "车身颜色黄色"
},
"slag_full_loaded": {
"score": 0.9681426882743835,
"name": "渣土车未满载"
},
"safety_belt_copilot": {
"score": 0.9999989867210388,
"name": "副驾驶系安全带"
},
"vehicle_front_item_placeitems": {
"score": 0.7316561937332153,
"name": "有车前摆放物"
},
"vehicle_inspection": {
"score": 0.6960608959197998,
"name": "有年检标"
},
"skylight": {
"score": 0.9296075105667114,
"name": "无天窗"
},
"dangerous_vehicle": {
"score": 0.9980440139770508,
"name": "非危险品车"
},
"vehicle_shielding": {
"score": 0.9729943871498108,
"name": "无遮挡"
},
"sunvisor_copilot": {
"score": 0.9857694506645203,
"name": "副驾驶遮阳板未放下"
},
"safety_belt_pilot": {
"score": 0.6393722891807556,
"name": "驾驶员未系安全带"
},
"window_rain_eyebrow": {
"score": 0.9806464910507202,
"name": "无车窗雨眉"
},
"sunvisor_pilot": {
"score": 0.7367949485778809,
"name": "驾驶员遮阳板未放下"
},
"plate_stained": {
"score": 0.9940692186355591,
"name": "车牌无污损"
},
"slag_vehicle": {
"score": 0.986552894115448,
"name": "非渣土车"
},
"vehicle_front_item_pendant": {
"score": 0.9854007363319397,
"name": "无后视镜挂件"
},
"has_plate": {
"score": 0.9633370637893677,
"name": "有车牌"
},
"vehicle_class": {
"score": 0.9078437685966492,
"name": "四轮车"
},
"special_vehicle": {
"score": 0.8234432339668274,
"name": "校车"
},
"plate_cover": {
"score": 0.9921958446502686,
"name": "车牌未遮挡"
},
"top_holder": {
"score": 0.98869788646698,
"name": "无车顶架"
},
"slag_vehicle_cover": {
"score": 0.7752302885055542,
"name": "渣土车未盖板"
},
"slag_refit": {
"score": 0.9444331526756287,
"name": "渣土车未改装"
},
"has_copilot": {
"score": 0.9544827342033386,
"name": "副驾驶无人"
},
"direction": {
"score": 0.8230369091033936,
"name": "车辆正向行驶"
}
},
"location": {
"score": 0.9173700213432312,
"top": 136,
"left": 281,
"width": 125,
"cls": 1,
"height": 102
}
}
],
"vehicle_num": 2
}