Sentence examples for mean luminance divided from inspiring English sources

Contrast for a Gaussian spot is defined as the difference between the peak luminance of the Gaussian and the mean luminance divided by the mean luminance.

The luminance values inside the oval mask were normalized for each face such that mean luminance was equal to half maximum luminance (i.e., 35 cd/m2), and the root-mean-squared (rms) contrast (defined as the standard deviation of luminance divided by mean luminance) was set to 1. Luminance outside the oval mask was set to half the maximum luminance.

To solve this, a redefined contrast formula (Eqs. 2 and 3) is introduced in which contrast is equal to an absolute value of the difference between target and background luminance divided by the larger of the two luminances.

The contrast for each grid cell was defined as a version of root-mean-square contrast: 26 the standard deviation of luminance values of all pixels in the grid cell divided by the mean luminance of the image.

Human adaptation state is related to the mean luminance in their field of view.

These results suggest that humans prefer images with luminances that are distributed relatively evenly about the mean luminance, i.e., images with similar amounts of light and dark.

The mean luminance was 14 cd/m2.

Let F ̄ k be the mean luminance value for the k th frame and B ̄ k ( i, j ) the mean luminance value of block B k ( i, j ).

Signed difference g p − g c is not affected by changes in mean luminance.

Fig. 4 The mean luminance variation across the duration-normalized movies in three different eras of popular movies.

To reduce the image salience, and hence slow processing, we added zero mean luminance noise to the image.