Simulated Camera Data for EMVA 1288 Verification

Description

Technical info

Simulated data for verification of methods and algorithms according to EMVA 1288

This data set contains simulated data from a 12-bit monochrome camera with the following specifications:

• 12 bit resolution (gray values between 0 and 4095)
• quantum efficiency η = 0.5
• overall system gain K = 0.1
• mean dark value μ_y.dark = 29.4 DN

Dark noise and DSNU

The standard deviation of the dark noise is σ_d = 30 e^- or 3.0 DN.
The DSNU has a white spatial standard deviation of 1.5 DN and two sinusoidal patterns with an amplitude of 1.5 DN and frequencies in horizontal and vertical direction of 0.04 and 0.2 cylces/pixel, respectively.
One hundred outlier pixels at random positions are added with an excess dark signal equally distributed between 0 and 15 DN.

PRNU

The PRNU has a white spatial standard deviation of 0.5 %.
In addition, a slightly inhomogenous illumination with a quadratic fall-off towards the edges by about 3 % was simulated.
One hundred outlier pixels at random positions are added with a reduced sensitivity that is equally distributed between 70 % and 100 % of the mean sensitivity.

Nonlinearity

The signal is modeled slightly nonlinear according to the following model:

y' = y * ( 1 – 0.02 * (y/y_max)³ )
with y_max = 4095.

Data files

• RAW
  The data set contains two sets of images All images are raw 16-bit images, stored row by row and have a size of 640 x 480 = 614 400 bytes.
  • 51 images at 51 equally distributed illumination steps from a dark image to saturation. For each illumination step, two images were taken. These images have the names
    mv01-[nr]a.raw and mv01-[nr]b.raw, where [nr] is a 3-digit number from 000 to 050. The number of photons/pixel increase from step to step by 1659.66 photons/pixel. At the last step (image 050), the pixel is irradiated by 82983 photons, image 000 is the dark image.
  • 100 dark images and 100 images at 50% saturation for inhomogeneity images with the names dsnu01-.raw and prnu01-.raw
• HDF5 (about HDF5)
  All images are in one HDF5-File.
  The file consists of following objects:
  • "dsnu" (100 x 480 x 640) 100 dark images;
  • "prnu" (100 x 480 x 640) 100 images at 50% saturation;
  • "raw1" (51 x 480 x 640) first image at 51 illumination steps;
  • "raw2" (51 x 480 x 640) second image at 51 illumination steps;
  Each object in the h5-files is a 16-bit unsigned integer.

Notes