Brompton Tessera v3.3 speeds up Led video processing

The new functions that Brompton Technology has been introduced in the version 3.3 of its Tessera software optimize the performance of Led panels to streamline professional workflows.

Led video processors SX40 card y S8 of Brompton Technology now have a preset that supports color space Aces AP1. Besides, Collaboration with virtual production provider Mon-Sys adds support for camera tracking system StarTracker when using panels equipped with Tessera R2 or the new receiving card R2+ card and an SX40 or S8 processor with Frame Remapping.

Specifically, Tessera R2+ has the same SO-DIMM form factor as the R2, which has set the standard for receiving cards for many years. In the case of R2+, which is compatible with all R2 based panel layouts, Provides additional data pins and ability to support new LED drivers.

Operating modes

Normally, When FAEs work with panel manufacturers to create their configuration it is necessary to make certain trade-offs between different aspects of visual performance. Pursuit of faster refresh rates may mean reducing PWM bit depth, while increasing maximum brightness may compromise low light performance.

Although LED panel manufacturers try to find a good balance, Currently there is only a 'one size fits all' configuration that applies for the entire life of the panel

“This represents a real challenge if LED panels need to be used in various scenarios that require prioritizing different aspects of visual performance., For example, if you need maximum brightness for a live outdoor event and the highest effective refresh rate to optimize performance with certain types of cameras in a studio. With Tessera's Operating Modes function 3.3 onwards, “both scenarios can benefit from the best possible performance of the panel”, states Chris Deighton, Brompton CTO.

Operating modes allow the same type of panel to offer different operations. So, Operating modes can prioritize different aspects of visual performance, as maximum frame rate, low brightness performance, the effective bit depth or refresh rate, inter alia.

Brompton engineers, in close collaboration with panel manufacturers, can create additional operating modes. Once activated, Users can instantly switch panels between operating modes through the processor, depending on the needs of each event or project.

Batch PureTone

Rental companies are well aware of the problems posed by combining different batches of LED panels.. Despite being the same type and calibrated with the same brightness, color temperature and color targets, Often a new batch of LED panels will look noticeably different when displaying content..

This problem is normally due to differences in the non-linearity of different batches of LED or driver chips., a behavior that Brompton's PureTone feature corrects, and that in the version 3.3 Tessera has been expanded so that each individual batch of panels is measured separately, generating a PureTone profile specific to that batch.

“With the new PureTone function – explains Deighton –, our customers and panel manufacturers can correct the non-linearity of each batch of panels, ensuring neutral gray scales and accurate luminance performance in all operating modes.”.

Thanks to this function, “it is much easier to match different batches of Led. PureTone is also very useful in film and television work, where screens often run at much lower brightness to match camera exposures, but it is still necessary to maintain neutral gray scales and accurate color reproduction.", duck.

ACEScg Support

As part of Brompton's commitment to streamline professional workflows for virtual production, Tessera SX40 and S8 now have a preset to support ACES AP1 primaries, used by the ACEScg color space, increasingly used, which avoids converting the color space on the source device.

ACES AP1 is automatically recognized by the processor through HDMI 2.0, or can be selected manually on the processor. The user can also reference the ACES AP1 color gamut within Brompton's dynamic calibration tools.

“By supporting the ACEScg color space, "We ensure that users working in that space can output it directly without unnecessary color space conversion," says Deighton.. The fact that the source has to do this conversion can sometimes mean a loss of precision or clipping of colors. “We wanted to simplify that process so that users who really care about color accuracy can further streamline their workflow.”.

Bookmark Tracking

In collaboration with Mo-Sys, Brompton has added support for the StarTracker camera tracking system when using Tessera R2 based panels, along with Led Tessera SX40 or S8 processors and Frame Remapping.

“Precise camera position tracking is critical for many xR and virtual production applications,” Deighton points out.. Although there are many different systems to achieve this, A common approach has been the use of visible markers, which can be a challenge within a Led volume, which can now be resolved by now displaying the appropriate markers on the Led itself”.

Bookmarks overlay displayed video content, and Tessera's frame remapping function is used to display them only on the output frames, which are not visible to the main camera, ensuring they will never appear in the shot or reflections. Bookmarks are generated automatically, with the possibility of configuring its color and size from the processor user interface.