This design example shows how to resize a video frame using Altera's Scaler MegaCore® function at run time on the hardware. The various sizes of video and image display devices make scaling one of the most commonly used techniques in video and image processing.
This design example demonstrates up conversion from a foreground test pattern in national television system committee (NTSC) format and picture-in-picture mixing with a background test pattern layer. The video stream is output in a high definition resolution (1024x768) over a VGA cable.
Download the files used in this example:
- Download scaler_2s60_v90.zip
- Download scaler_2s60_readme_v90 (TXT)
- Download scaler_2c70_v90.zip
- Download scaler_2c70_readme_v90 (TXT)
The use of this design is governed by, and subject to, the terms and conditions of the Altera Hardware Reference Design License Agreement.
Figure 1 shows the top-level diagram of a foreground image frame resizing using the Scaler MegaCore function and picture-in-picture with background using the Mixer MegaCore function.
Figure 1. Foreground Image Frame Resizing
Figure 2 shows the expected output on the LCD display.
Figure 2. LCD Display Output
Related Links
- Video and Image Processing Suite User Guide (PDF)
- AN 427: Video and Image Processing Up Conversion Example Design (PDF)
- AN 559: High Definition (HD) Video Reference Design (V1) (PDF)
Design Examples Disclaimer
These design examples may only be used within Altera Corporation devices and remain the property of Altera. They are being provided on an “as-is” basis and as an accommodation; therefore, all warranties, representations, or guarantees of any kind (whether express, implied, or statutory) including, without limitation, warranties of merchantability, non-infringement, or fitness for a particular purpose, are specifically disclaimed. Altera expressly does not recommend, suggest, or require that these examples be used in combination with any other product not provided by Altera.
