Wavelet-Based Lossless Compression for Computer Screen Images

Dr. P.S. Jagadeesh Kumar's paper discusses a wavelet sub-band coding method for lossless compression of compound images, such as computer screens. The work addresses the challenge of transmitting real-time screen video data, where an 800x600 true color frame is 1.44 MB and 85 frames per second produces over 100 MB of data. Implementation results show excellent visual quality for text in compressed images.

Use Cases

• Implementing wavelet sub-band coding for lossless compression of screen image data.
• Evaluating compression performance on text regions within compound images for visual quality.
• Transmitting 800x600 true color screen frames over wireless networks using the described method.
• Applying the compression technique in remote control software like Virtual Network Computing (VNC).

Strengths

• Method validated on 800x600 true color screen images, with each uncompressed frame being 1.44 MB.
• Paper implementation reports excellent visual quality for text in compressed images.

Limitations

• Specific dataset size, row count, and compression ratios are not provided.
• Performance details on non-text image components or other resolutions are unknown.

Provenance

Source

Paper by Dr. P.S. Jagadeesh Kumar, sourced from Papers with Code.

Collection Method

Research paper discussing a proposed wavelet-based compression method and its implementation.