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ABBYY FineReader 10 Home Edition User’s Guide
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characters are distorted or stuck together
• Increase the brightness to make the image brighter.
• Scan in grayscale. Brightness will be tuned automatically.
Taking Photos of Documents
• Camera Requirements
• Lighting
• Taking Photos
• When you need to take another photo
Camera Requirements
Your camera should meet the following requirements in order to obtain document images that can be reliably
recognized.
Recommended camera characteristics
• Image sensor: 5 million pixels for A4 pages. Smaller sensors may be sufficient for taking pictures of smaller
documents such as business cards.
• Flash disable feature
• Manual aperture control, i.e. availability of Av or full manual mode
• Manual focusing
• An anti–shake system or use of a tripod
• Optical zoom
Minimum requirements
• Image sensor: 2 million pixels for A4 pages
• Variable focal distance. Fixed–focus cameras (lens focused on infinity) should not be used to photograph
documents. These types of camera are commonly built into mobile phones and PDAs.
Note: For detailed information about your camera, please refer to the documentation supplied with your device.
Lighting
Lighting greatly affects the quality of the resulting photo.
Best results can be achieved with bright and evenly distributed light, preferably daylight. On a bright sunny day, you
can increase the aperture number to get a sharper picture.
Using flash and additional light sources
• When using artificial lighting, use two light sources positioned so as to avoid shadows or glare.
• If there is enough light, turn the flash off to prevent sharp highlights and shadows. When using the flash in
poor lighting conditions, be sure to take photos from a distance of approximately 50 cm.
Important! The flash must not be used to take pictures of documents printed on glossy paper. Compare an image
with galre with a good quality image: