RectAce (High-Quality Scanner) 6.0.0

This application transforms your iPhone into a versatile scanning tool, accommodating a wide range of media including documents, receipts, business cards, notebooks, catalogs, whiteboards, posters, and train schedules. It is designed to capture high-quality images with precision and clarity.

When importing images from your iPhone’s Photo Album or capturing directly with the device’s camera, the app intelligently detects the frame (outline) within the image, corrects the perspective to present a frontal view, and applies color adjustments to enhance visual fidelity. This process yields scan quality comparable to that of dedicated scanners.

Note that pricing may be adjusted without prior notice.

Features Overview

1. Frame recognition: The application detects rectangular regions by identifying four corner points and evaluates lens distortion—such as barrel distortion—to optimize the frame. It captures multiple frame candidates simultaneously, streamlining the scanning workflow.
2. Perspective correction: Photos taken at an angle are digitally adjusted to appear as if captured straight-on. Distortion corrections are refined using data obtained from the frame recognition process.
3. Color correction: Enables detailed color reproduction and black-and-white imaging. The app ensures small characters are legible and includes a background color modification feature to remove shadows while preserving relevant content.

Main Functionalities

• Camera features:
  • Multiple continuous shots with automatic selection of the clearest image (BSS: Best-Shot Selection).
  • "Shutter when shaking stops" function to reduce blurring.
• Frame recognition:
  • Detection of rectangular regions.
  • Distortion recognition with toggle options.
  • Selection of multiple candidate frames.
• Geometric correction:
  • Front-facing adjustment for angled photographs.
  • Distortion correction with toggle capability.
  • Edge smoothing to improve image borders.
• Color correction:
  • Enhancement for sharper images.
  • Brightness adjustments.
  • Background color modification for shadow removal and color restoration.
  • Tightening of thin characters for improved readability.
• Image processing:
  • Elimination of salt-and-pepper noise to reduce speckles.
  • Cropping of predefined rectangular sections.
  • Slight trimming of image edges to remove residual contours.
  • Adjustment of aspect ratio with optional manual settings.
• Batch processing:

• Continuous capture of multiple pages with automatic frame detection and correction processes applied collectively.

• In-App File Management: Creating subfolders within an existing folder, with options to expand folder hierarchies.

• Printing & Sharing:

• AirPrint support for single-image printing at full scale (100%). In-app purchase unlocks additional printer extension functionalities such as multiple images per page.
• Email distribution in JPEG or PDF formats.
• Cloud integration options enabling direct forwarding to services like Evernote, Google Drive, Dropbox, and OneDrive in JPEG or PDF formats with customizable maximum file sizes.