OCR PDF Mien Phi — Trich Xuat Van Ban Tu Tai Lieu Da Quet

Ban co mot hop dong da quet, bien lai da chup, hoac mot PDF cu trong nhu co van ban nhung khong the chon duoc bat ky tu nao. PDF do dua tren hinh anh — van ban ban thay thuc ra la mot buc anh. OCR (Nhan dang Ky tu Quang hoc) giai quyet van de nay bang cach doc hinh anh va chuyen doi thanh van ban thuc, co the chon va tim kiem.

Cong cu OCR PDF cua PDFGem thuc hien toan bo qua trinh nay trong trinh duyet cua ban. Khong co file nao duoc tai len may chu, khong can tai khoan, va khong co gioi han hang ngay.

OCR thuc su lam gi

OCR la cong nghe phan tich hinh anh — du la ban quet, anh chup hay anh chup man hinh — va nhan dien hinh dang cua cac chu cai, so va ky hieu. Theo IBM, OCR chuyen doi hinh anh van ban thanh dinh dang doc duoc boi may tinh bang cach lam sach hinh anh truoc roi so khop hinh dang ky tu voi cac mau da biet.

Cach biet PDF cua ban co can OCR khong

1. Mo PDF trong bat ky trinh xem nao (trinh duyet cung duoc).
2. Thu chon van ban bang cach nhan va keo qua mot tu.
3. Neu ban co the boi dam tu va sao chep, PDF da co van ban — khong can OCR.
4. Neu khong co gi duoc boi dam, PDF dua tren hinh anh va can OCR.

Huong dan tung buoc: trich xuat van ban voi PDFGem OCR

1. Mo cong cu OCR PDF — khong can cai dat, khong can dang ky.
2. Tai len PDF bang cach keo vao khu vuc tai len hoac nhan de duyet thiet bi.
3. Chon ngon ngu tai lieu — cho cong cu nhan dang biet su dung bo ky tu nao. PDFGem ho tro 16 ngon ngu.
4. Nhan nut OCR — xu ly bat dau ngay trong trinh duyet.
5. Xem van ban da trich xuat — hien thi tren man hinh. Sao chep vao clipboard hoac tai ve dang file van ban.

Khi nao ban can OCR: cac tinh huong thuc te

So hoa ho so giay cu

Mot doanh nghiep nho co tu ho so hoa don tu 2010-2018. Sau khi quet sang PDF, cac file chi la hinh anh. OCR bien chung thanh file co the tim kiem: tim "hoa don #4872" chi mat vai giay.

Lam hop dong quet co the tim kiem

Ban nhan hop dong 30 trang da ky duoi dang PDF quet. Voi OCR, chi can Ctrl+F va tim "cham dut" — tuc thi.

Trich xuat du lieu tu bien lai

Freelancer va ke toan thuong nhan bien lai chi phi dang PDF chup anh. OCR trich xuat ten nha cung cap, ngay va so tien de dan vao bang tinh.

Meo de co ket qua OCR tot nhat

• Quet o 300 DPI tro len — khuyen nghi tieu chuan de nhan dang ky tu dang tin cay.
• Giu trang thang — ban quet lech gay loi nhan dang.
• Su dung che do xam — ban quet mau tao file lon hon ma khong cai thien nhan dang.
• Dam bao do tuong phan tot — van ban toi tren nen trang la ly tuong.
• Chon dung ngon ngu — dung "English" cho tai lieu tieng Viet se gay loi voi dau.

Sau OCR

• PDF sang Van ban — trich xuat van ban da nhan dang thanh file text sach.
• PDF sang Word — chuyen doi PDF thanh tai lieu Word co the chinh sua.
• Nen PDF — PDF quet thuong co dung luong lon. Nen giam kich thuoc file.

OCR trong trinh duyet: tai sao quyen rieng tu quan trong

Hau het cac cong cu OCR truc tuyen yeu cau tai PDF len may chu cua ho. Hop dong va tai lieu thue cua ban di qua co so ha tang cua ben thu ba.

PDFGem hoat dong khac. Cong cu OCR tien tien chay hoan toan trong trinh duyet. Mo hinh nhan dang tai mot lan va xu ly moi thu cuc bo. PDF cua ban o tren thiet bi tu dau den cuoi. Day khong phai loi hua tiep thi — day la quyet dinh kien truc.

San sang trich xuat van ban tu PDF quet? Mo cong cu OCR PDF — mien phi, rieng tu, hoan toan trong trinh duyet.