Viewing Built-in Rules

Constraints

• Built-in rules cannot be edited or deleted.
• Currently, OCR can recognize business license images only in some regions. For details about the supported regions, see Regions Supported by OCR.
• For details about the restrictions on using other built-in image rules, see Restrictions on Passport OCR and .

Viewing Built-in Rules

1. Log in to the management console.
2. Click in the upper left corner and select a region or project.
3. In the navigation tree on the left, click . Choose Security and Compliance > Data Security Center .
4. In the navigation pane, choose Sensitive Data Identification > Identification Configuration.
5. Click the Identification Rule tab, as shown in Figure 1.
   Figure 1 Identification rules
   

6. In the rule list, click next to Rule Source and select Built-in to view all built-in rules.

Restrictions on Passport OCR

• All fields on Chinese mainland passports can be recognized.
• Passports that are issued by China, Hong Kong (China), Macao (China), Taiwan (China), and other countries and regions and that are with complete machine-readable codes can be recognized.
• Only images in PNG, JPG, JPEG, BMP, or TIFF format can be recognized.
• No side of the image can be smaller than 15 or larger than 4,0968,192 pixels.
• The information page of the passport to be recognized must occupy more than 25% of the image. When scanning a passport, ensure that the entire page is displayed in the image.
• A passport can be rotated to any angle.
• The passport in the image can be moderately distorted, but the aspect ratio cannot be distorted by more than 10%.
• Illuminated or dark images can be recognized, but the accuracy may be compromised.