xR SYSTEM solution
xR has revolutionized the audiovisual industry, this technology is present in the creation of all types of content creation. It has become ubiquitous in film creation and is changing the process forever. xR is meaning: AR+VR+MR = virtual implantation + virtual scene + real subject +real scene.
xR is based on MR green screen shooting, which realizes real-time rendering of large-screen content and real-time shooting of biological subjects. It is widely used in many fields such as film and television production, radio and television program production, product launch, advertising shooting, cultural tourism promotion, MV production and so on. The actual system includes camera, lens tracking system, simulation scene rendering system, LED screen, screen management system, centralized control system, synchronous clock system, and synthesis system.
System with
xR application
typical problem
with XR solution
lines
Problem with
display performance
Differents colors from different angles
image quality
on led display
cost & reliability
for led display
On site problem for xR
- 1. SOLUTION COST
- 2. SET UP CONVENIENCE
- 3. STABILITY & RELIABILITY
Requirements of xR solution for LED Display and its control system
- 1.NO SHOOTING LINES
- 2. NO BANDING OR NOISE
- 3. PRECISE COLOR DISPLAY CLOSE TO REAL
- 4.SAME COLORS EFFECT FROM ALL ANGLES
Adequate visual refresh rate on display --no shooting lines on camera
display design led screen
- Low scan, best display effect
- Less than 8 scans recommended
control system
- Adequate refresh rate in low grayscale ensured in collaboration with ic
- Genlock available to keep video source, display, cameras
synchronised
shooting lines
Improve the refresh of each gray scale can effectively solve the shooting lines issue.
Reduce the number of scans while designing the display. It is recommended that the number of scans not exceed 16 scans for shooting applications.
Prioritize the reduction of current to reduce brightness, and preset multiple brightness adjustment modes that prioritize the use of current.
Driver IC mode adjustment.
Random scanning.
Rolling black lines
FRAME MULTIPLICATION to led screen
Frame tracking technology to reduce black field waiting time.
Genlock function of the controller to synchronize the LED display with the camera, and fine-tune the phase of Genlock
From the relationship between camera exposure time and LED display frame rate, we can determine the proper combination of shutter angle and frame rate for the most optimal shooting result.
We can support frame multiplication, allowing for expansion of frame rate.
The LED Image Booster,
developed by NovaStar
Technology, works to solve the
display’s grayscale and color
issues.
No bangding,
precise color
Adequate grayscale on display — colors more precisely controlled
Display design
- Customized color gamut covered by the RGB lamp beads
- Displays uncoupled designed(screen design and IC selection)
- White to black coupling
- Black to white coupling
- Cross-board coupling
Control system:
Increase in display grayscale ensured in collaboration with IC
Capability of calibrating the screen
2.1 The brightness calibration of the screen from 0 to 255 conforms to the EOTF curve;
2.2 Calibrate the color accuracy of the screen to ensure δe<4
1. Accurately capture the original color gamut of
the display.
2. Automatic adjustment according to the color
gamut requirements of the input source.
1. 22bit+ achieves the highest 6bit grayscale
promotion and the smallest 0.002nits precise
control and compensation.
2.Precise Grayscale, use a colormeter to collect
the original grayscale performance of each
color, and make corrections and
compensations.
Effet comparaison (before left) and after (right)
Same effect from
different angles
Requirements of xR for LED Display
Small enough RGB chip spacing required
Display design
1.Choose smaller size LED chips
2.The mesh cover of LED is specially
Control system:
Quick adjustment of RGB ratio in case of a
problem to ensure normal color display of some cameras
REAL CASE for xr
the solution for xR
NovaStar xR display system
Suitable for shooting and application
of small scenes
1G bandwidth solution at 8K resolution
Suitable for shooting and applications in
large-scale scenes such as studios
Higher requirements of xR for LED screens
8K HDR
- HFR 120Hz/144Hz/240Hz
- 10bit/12bit
- Precise Color
- Ultra low latency