Sub-pixel scaling to meet your pixel size, sensitivity, and resolution requirements.

Xscale flexible pixel rescaling technology

CMOS sensor technology is available in a range of pixel sizes and resolutions. But as machine vision designers know all too well, finding the right fit for a particular application is not as easy as it sounds.

Perhaps you need to replace an older camera with a newer one, but the new camera has a different pixel size that requires you to either change the resolution or change the field of view of your existing system.

Or perhaps you are trying to combine pixels to increase sensitivity but don’t want to sacrifice as much resolution as you would need to with 2x2 or 4x4 binning.

Or maybe you simply want to use binning to increase the sensitivity of a color camera, but your preferred camera doesn’t support color binning.

JAI’s Xscale is your solution.

The power of Xscale
Xscale lets you adjust pixel size, resolution, sensitivity, and signal-to-noise ratio with much greater flexibility than traditional binning. That’s because traditional binning is limited to combinations of "whole" pixels, such as 2x1, 2x2, 4x4, etc.

Xscale, on the other hand, accepts floating point values, letting you combine whole pixels with partial fractions of pixels to create “virtual” pixels that are the exact size you need.

Xscale virtual pixel rescaling vs. traditional binning

With Xscale you can:

  • Use summing to create pixels with higher sensitivity
  • Use averaging to create pixels with better signal-to-noise ratios (SNR)
  • Combine scaling with ROI to match both the pixel size and resolution/FOV needed
  • Apply scaling to monochrome, Bayer, or RGB pixel formats

Independent H & V scaling
Xscale offers exceptional flexibility for rescaling pixel sizes. Although most of today’s CMOS sensors feature square pixels, there can be times when rectangular pixels are needed for a particular project. This could be needed to match the format of an older camera with rectangular pixels, or it could be to match an asymmetrical binning configuration such as 1x2 or 2x1.

Xscale supports the use of different scaling factors in the horizontal and vertical directions to ensure that you can meet your target pixel size and shape.

Xscale provides independent H&V scaling factors

Up to 16:1 scaling
While binning is typically limited to 2X or sometimes 4X size factors, Xscale supports scaling factors up to 16X the starting pixel size on the sensor. Need the light-gathering capability of a 40 µm pixel? With Xscale’s 16:1 scaling range, even this becomes possible.

Xscale's 16:1 maximum scaling ratio

JAI’s Xscale cameras
The Xscale capability is included as a standard feature on JAI Go-X Series cameras equipped with Sony Pregius S CMOS sensors. This currently includes 12 models with CoaXPress interfaces, and 12 models with 1000BASE-T GigE Vision interfaces. 12 additional Go-X models with Pregius S sensors, 5GBASE-T GigE Vision interfaces, and Xscale capabilities are planned for Q4 2022.

Base resolutions on the Xscale-equipped cameras range from 5.1 megapixels to 24.5 megapixels. The base pixel size is 2.74 µm.

For more information, visit the Go-X Series page at: www.jai.com/go-x-series

Xscale in the Go-X Series

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