Altera Video and Image Processing Suite User Manual
Page 186
Address
Register
RO/RW
Description
12
Cadence Detect On
RW
• Setting the LSB of this register to 1 enables cadence
detection.
• Setting the LSB of this register to 0 disables cadence
detection.
• Cadence detection is disabled on reset.
Range: 0–1
Power on value: 0
13
Video Threshold
RW
The most important register to tune the video over
film features. Set lower values for more emphasis on
video and higher values for more emphasis on film.
Range: 0–255
Power on value: 160
14
Film Lock
Threshold
RW
3:2 cadence is rechecked at every 5th field.
• If a given pixel fulfils the requirements for a
cadence on a given field, the core increments its
lock count.
• If the lock count reaches the value of this register,
then the given pixel is locked.
Set lower values for greater sensitivity to cadenced
sequences. If lock is declared for a pixel, then the core
performs reverse telecine during deinterlacing.
Range: 3–7
Power on value: 3
15
Film Unlock
Threshold
RW
3:2 cadence is rechecked at every 5th field.
• If a given pixel fulfils the requirements for a
cadence on a given field, the core decrements its
lock count.
• If the lock count reaches the value of this register,
then the given pixel loses its lock.
Set lower values to cater for bad edits and poor film
qualities. The value for this register must be set lower
than the Film Lock Threshold register. The core
performs standard motion adaptive deinterlacing for
unlocked pixels.
Range: 0–5
Power on value: 0
UG-VIPSUITE
2015.05.04
Deinterlacing Control Registers
12-27
Deinterlacing IP Cores
Altera Corporation