Which factor does not determine the spatial resolution of the scan converter?

Which factor does not determine the spatial resolution of the scan converter?

• A. Number of pixels in the matrix
• B. Number of bits per pixel
• C. Interpolation scheme
• D. Brightness and contrast settings of the monitor

Answer: (D)

Spatial resolution is about how finely the image is sampled in space. In a scan converter, this comes from how many pixels make up the display matrix and how data is interpolated between those sample points, which sets how distinctly two nearby structures can be resolved. The amount of bits per pixel affects grayscale depth, influencing tonal detail rather than how many spatial samples exist, so it doesn’t change spatial resolution. Interpolation can change the apparent sharpness by estimating values between samples, which alters perceived clarity but not the fundamental sampling grid. Brightness and contrast settings of the monitor adjust how the image is displayed—luminance and tonal range—without changing the underlying sampling or pixel density, so they do not determine spatial resolution.

Spatial resolution is about how finely the image is sampled in space. In a scan converter, this comes from how many pixels make up the display matrix and how data is interpolated between those sample points, which sets how distinctly two nearby structures can be resolved. The amount of bits per pixel affects grayscale depth, influencing tonal detail rather than how many spatial samples exist, so it doesn’t change spatial resolution. Interpolation can change the apparent sharpness by estimating values between samples, which alters perceived clarity but not the fundamental sampling grid. Brightness and contrast settings of the monitor adjust how the image is displayed—luminance and tonal range—without changing the underlying sampling or pixel density, so they do not determine spatial resolution.