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[英]How to set a whitelist and blacklist in chrome with Android Management API
[英]blacklist and whitelist in tesseract ANDROID
我正在開發一個Android應用程序,通過電話的相機或從畫廊拍照卡來為信用卡充值。我使用tesseract庫為此目的只使用黑名單和白名單的數字..它不能按預期工作
我使用的圖片僅包含這兩行:
PIN碼
41722757649786
開始充電活動之前的結果是:
718 200
41722757649786
我想只識別沒有字母的數字而不使用cropper ..
public void initTess(){
if (mBaseApi != null)
mBaseApi.end();
mBaseApi = new TessBaseAPI();
mBaseApi.setDebug(false);
mBaseApi.setPageSegMode(TessBaseAPI.PageSegMode.PSM_OSD_ONLY);
mBaseApi.init(mDataDir + File.separator,"eng");
mBaseApi.setVariable(TessBaseAPI.VAR_CHAR_WHITELIST,"0123456789");
mBaseApi.setVariable(TessBaseAPI.VAR_CHAR_BLACKLIST,"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmopqrstuvwxyz");
}
設置"tessedit_char_whitelist"
變量必須在初始化之前完成,如FAQ中所述: https : //code.google.com/p/tesseract-ocr/wiki/FAQ#How_do_I_recognize_only_digits ? 這很可能也適用於黑名單。
因此,從以下更改您的代碼:
mBaseApi.setPageSegMode(TessBaseAPI.PageSegMode.PSM_OSD_ONLY);
mBaseApi.init(mDataDir + File.separator,"eng");
mBaseApi.setVariable(TessBaseAPI.VAR_CHAR_WHITELIST,"0123456789");
mBaseApi.setVariable(TessBaseAPI.VAR_CHAR_BLACKLIST,"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmopqrstuvwxyz");
對此:
mBaseApi.setPageSegMode(TessBaseAPI.PageSegMode.PSM_OSD_ONLY);
mBaseApi.setVariable(TessBaseAPI.VAR_CHAR_WHITELIST,"0123456789");
mBaseApi.setVariable(TessBaseAPI.VAR_CHAR_BLACKLIST,"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmopqrstuvwxyz");
mBaseApi.init(mDataDir + File.separator,"eng");
應該做的伎倆。
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