Go車牌識別（網(wǎng)絡(luò)圖片|本地圖片）
在成都做網(wǎng)站、網(wǎng)站建設(shè)、外貿(mào)營銷網(wǎng)站建設(shè)中從網(wǎng)站色彩、結(jié)構(gòu)布局、欄目設(shè)置、關(guān)鍵詞群組等細(xì)微處著手，突出企業(yè)的產(chǎn)品/服務(wù)/品牌，幫助企業(yè)鎖定精準(zhǔn)用戶，提高在線咨詢和轉(zhuǎn)化，使成都網(wǎng)站營銷成為有效果、有回報的無錫營銷推廣。創(chuàng)新互聯(lián)建站專業(yè)成都網(wǎng)站建設(shè)10年了，客戶滿意度97.8%，歡迎成都創(chuàng)新互聯(lián)客戶聯(lián)系。
先注冊一個百度云賬號，然后選擇 人工智能 文字識別，創(chuàng)建一個應(yīng)用。獲取appkey secret 。
網(wǎng)絡(luò)圖片
package main
import (
"encoding/base64"
"encoding/json"
"io/ioutil"
"log"
"net/http"
"net/url"
)
func main() {
handler := PlateHandler{}
appKey := "11111"
secret := "11111111z"
accessToken := handler.GetAccessToken(appKey, secret)
log.Println("獲取到的accessToken:",accessToken)
pictureUrl := "https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=2181674788,2215933125&fm=26&gp=0.jpg"
plate,err:=handler.GetPlate(pictureUrl,accessToken)
if err!=nil{
log.Fatal("獲取車牌失敗",err)
}
log.Println("獲取到的車牌:",plate)
}
type accessTokenInfo struct {
AccessToken string `json:"access_token"`
ExpiresIn int64 `json:"expires_in""`
}
type WordResult struct {
Number string `json:"number"`
}
type Data struct {
WordsResult WordResult `json:"words_result"`
}
type PlateHandler struct {
}
func (handler *PlateHandler) GetAccessToken(appKey string, appSecret string) (accessToken string) {
url := "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id="+appKey+"&client_secret="+appSecret
response, err := http.Get(url)
if err != nil {
log.Fatal(err)
return ""
}
data, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal(err)
return ""
}
info := accessTokenInfo{}
json.Unmarshal(data, &info)
log.Print("請求accessToken返回的數(shù)據(jù):", string(data))
return info.AccessToken
}
func (handler *PlateHandler) GetPlate(picture_url string,accessToken string) (plate string, err error) {
rsp, err := http.Get(picture_url)
if err != nil {
log.Fatal(err)
return "", err
}
image, _ := ioutil.ReadAll(rsp.Body)
image_value, err2 := url.Parse(base64.StdEncoding.EncodeToString(image))
if err2 != nil {
log.Fatal(err)
return "", err
}
to_url := "https://aip.baidubce.com/rest/2.0/ocr/v1/license_plate?access_token="+accessToken
values := url.Values{}
values.Add("image", image_value.EscapedPath())
values.Add("multi_detect", "false")
rsp2, err := http.PostForm(to_url, values)
defer rsp2.Body.Close()
if err != nil {
log.Fatal(err)
return "", err
}
data, err := ioutil.ReadAll(rsp2.Body)
if err != nil {
log.Fatal(err)
return "", err
}
log.Println("請求車牌返回的數(shù)據(jù):",string(data))
m := Data{}
err = json.Unmarshal(data, &m)
if err != nil {
log.Fatal(err)
return "", err
}
log.Println(m)
return m.WordsResult.Number, nil
}本地圖片
package main
import (
"encoding/base64"
"encoding/json"
"io/ioutil"
"log"
"net/http"
"net/url"
"os"
)
func main() {
handler := PlateHandler{}
appKey := "111111111"
secret := "111111111"
accessToken := handler.GetAccessToken(appKey, secret)
log.Println("獲取到的accessToken:",accessToken)
pictureUrl := "day02/img/1.png" // 路徑，從根開始寫
plate,err:=handler.GetPlate(pictureUrl,accessToken)
if err!=nil{
log.Fatal("獲取車牌失敗",err)
}
log.Println("獲取到的車牌:",plate)
}
type accessTokenInfo struct {
AccessToken string `json:"access_token"`
ExpiresIn int64 `json:"expires_in""`
}
type WordResult struct {
Number string `json:"number"`
}
type Data struct {
WordsResult WordResult `json:"words_result"`
}
type PlateHandler struct {
}
func (handler *PlateHandler) GetAccessToken(appKey string, appSecret string) (accessToken string) {
url := "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials&client_id="+appKey+"&client_secret="+appSecret
response, err := http.Get(url)
if err != nil {
log.Fatal(err)
return ""
}
data, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal(err)
return ""
}
info := accessTokenInfo{}
json.Unmarshal(data, &info)
log.Print("請求accessToken返回的數(shù)據(jù):", string(data))
return info.AccessToken
}
func (handler *PlateHandler) GetPlate(picture_url string,accessToken string) (plate string, err error) {
ff, _ := os.Open(picture_url)
sourcebuffer := make([]byte, 50000000000)
n, _ := ff.Read(sourcebuffer)
//base64壓縮
sourcestring := base64.StdEncoding.EncodeToString(sourcebuffer[:n])
to_url := "https://aip.baidubce.com/rest/2.0/ocr/v1/license_plate?access_token="+accessToken
values := url.Values{}
values.Add("image", sourcestring)
values.Add("multi_detect", "false")
rsp2, err := http.PostForm(to_url, values)
defer rsp2.Body.Close()
if err != nil {
log.Fatal(err)
return "", err
}
data, err := ioutil.ReadAll(rsp2.Body)
if err != nil {
log.Fatal(err)
return "", err
}
log.Println("請求車牌返回的數(shù)據(jù):",string(data))
m := Data{}
err = json.Unmarshal(data, &m)
if err != nil {
log.Fatal(err)
return "", err
}
log.Println(m)
return m.WordsResult.Number, nil
}
結(jié)果
2019/12/25 11:48:34 請求車牌返回的數(shù)據(jù): {"log_id": 8926648569804002425, "words_result": {"color": "blue", "number": "豫A99999", "probability": [0.9014493227005005, 0.9014158248901367, 0.900929868221283, 0.9012478590011597, 0.901341438293457, 0.9010871052742004, 0.9010393619537354], "vertexes_location": [{"y": 181, "x": 241}, {"y": 173, "x": 439}, {"y": 229, "x": 442}, {"y": 236, "x": 244}]}}
2019/12/25 11:48:34 {{豫A99999}}
2019/12/25 11:48:34 獲取到的車牌: 豫A99999網(wǎng)站標(biāo)題：Go車牌識別（網(wǎng)絡(luò)圖片|本地圖片）
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