using System;
 
/// <summary>
/// 通用文字識別
/// </summary>
[Serializable]
public class GeneralOcr
{
    /// <summary>
    /// 圖像方向 -1未定義 0正弦 1逆時針90度 2逆時針180度 3逆時針270度
    /// </summary>
    public int direction;
    /// <summary>
    /// 唯一的log id，用于問題定位
    /// </summary>
    public int log_id;
    /// <summary>
    /// 識別結(jié)果數(shù)，表示words_result的元素個數(shù)
    /// </summary>
    public int words_result_num;
    /// <summary>
    /// 定位和識別結(jié)果數(shù)組
    /// </summary>
    public string[] words_result;
    /// <summary>
    /// 行置信度信息
    /// </summary>
    public Probability probability;
}
 
/// <summary>
/// 行置信度信息
/// </summary>
[Serializable]
public class Probability
{
    /// <summary>
    /// 行置信度平均值
    /// </summary>
    public int average;
    /// <summary>
    /// 行置信度方差
    /// </summary>
    public int variance;
    /// <summary>
    /// 行置信度最小值
    /// </summary>
    public int min;
}

using System;
using System.Collections.Generic;
using UnityEngine;
 
public class OCR 
{
    //以下信息于百度開發(fā)者中心創(chuàng)建應(yīng)用獲取
    private const string appID = "";
    private const string apiKey = "";
    private const string secretKey = "";
 
    /// <summary>
    /// 通用文字識別
    /// </summary>
    /// <param name="bytes">圖片字節(jié)數(shù)據(jù)</param>
    /// <param name="language">識別語言類型 默認(rèn)CHN_ENG中英文混合</param>
    /// <param name="detectDirection">是否檢測圖像朝向</param>
    /// <param name="detectLanguage">是否檢測語言，當(dāng)前支持中、英、日、韓</param>
    /// <param name="probability">是否返回識別結(jié)果中每一行的置信度</param>
    /// <returns></returns>
    public static GeneralOcr General(byte[] bytes, string language = "CHN_ENG", bool detectDirection = false, bool detectLanguage = false, bool probability = false)
    {
        var client = new Baidu.Aip.Ocr.Ocr(apiKey, secretKey);
        try
        {
            var options = new Dictionary<string, object>
            {
                { "language_type", language },
                { "detect_direction", detectDirection },
                { "detect_language", detectLanguage },
                { "probability", probability }
            };
            var response = client.GeneralBasic(bytes, options);
            GeneralOcr generalOcr = JsonUtility.FromJson<GeneralOcr>(response.ToString());
            return generalOcr;
        }
        catch (Exception error)
        {
            Debug.LogError(error);
        }
        return null;
    }
}    

OCR.General(File.ReadAllBytes(Application.dataPath + "/Picture.jpg"));