{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

quiz1sol - 10 ECE 253a Digital Image Processing Pamela...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
# 10 ECE 253a Digital Image Processing Pamela Cosman 10/29/10 QUIZ 1 SOLUTIONS 1. Human Visual System: (a) The relative luminous efficiency function shows, for each wavelength in the visible spec- trum, how efficient the human visual system (HVS) is at converting energy at that wavelength into a visible sensation of light, relative to how efficient the HVS is at the reference wavelength of 555nm. (b) Mach bands show a staircase function of increasing luminance, but the perceptual effect is not of a simple staircase. Rather, there are overshoots and undershoots at each step edge, which have the effect of enhancing the edge. (c) The oblique effect refers to the fact that humans have better acuity and sensitivity when stimuli are presented in vertical and horizontal directions, rather than presented at some oblique angle. (d) The contrast sensitivity function shows how sensitive humans are to sinusoidal grating patterns with different spatial frequencies. People are most sensitive at around 4 cpd,
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern