Due to some malfunction, a display performs the following operations (though not necessarily in the given order): operation 1 (it multiplies the emitted luminance by a positive number α) and operation 2 (it adds a constant c ∈ R to the emitted luminance). Then, the display dynamic range is: (a) not affected by the two operations (b) affected by the order of operations (i.e. which operation is performed first) (c) affected by only one of the mentioned operations You need to choose the correct option(s) from above and also provide sufficient justification for your answer(s).
Question
Due to some malfunction, a display performs the following operations (though not necessarily in the given order): operation 1 (it multiplies the emitted luminance by a positive number α) and operation 2 (it adds a constant c ∈ R to the emitted luminance). Then, the display dynamic range is: (a) not affected by the two operations (b) affected by the order of operations (i.e. which operation is performed first) (c) affected by only one of the mentioned operations You need to choose the correct option(s) from above and also provide sufficient justification for your answer(s).
Solution
The correct option is (b) affected by the order of operations (i.e. which operation is performed first).
Justification:
The display dynamic range is the ratio of the maximum luminance to the minimum luminance that a display can produce.
If operation 1 (multiplication by a positive number α) is performed first, it will scale both the maximum and minimum luminance by the same factor α, thus the ratio (i.e., the dynamic range) remains the same.
However, if operation 2 (addition of a constant c) is performed first, it will increase both the maximum and minimum luminance by the same amount c. This will not change the ratio if the minimum luminance is not zero (since the ratio of two numbers does not change if the same amount is added to both), but if the minimum luminance is zero (which is often the case for displays), the ratio (i.e., the dynamic range) will be affected.
Therefore, the dynamic range of the display is affected by the order of operations.
Similar Questions
Consider a display with following specifications: γ = 2.2, Lpeak = 500 cd/m2 , Lblack = 0.5 cd/m2 and k = 0.01. Then, determine the dynamic range of this display: (a) In a dark room (Eambient ≈ 0) (b) In outdoor settings (Eambient = 10000) Does a comparison of the computed dynamic ranges help to provide insights as to why a fairly low ambient light setting during screening of the movies?
Question 1Which of the following is not a valid value for the 'display' property?
In general, common anode displays are more popular as many logic circuits can sink more current than they can source. Also note that a common cathode display is not a direct replacement in a circuit for a common anode display and vice versa, as it is the same as connecting the LEDs in reverse, and hence light emission will not take place.Depending upon the decimal digit to be displayed, the particular set of LEDs is forward biased. For instance, to display the numerical digit 0, we will need to light up six of the LED segments corresponding to a, b, c, d, e and f. Thus the various digits from 0 through 9 can be displayed using a 7-segment display as shown.
elect the correct answerWhat will be the output of the following Java program? class parent { int a; public void display() { System.out.println(a); } } class child extends parent { int b; public void display() { System.out.println(b); } } class Dynamic_dispatch { public static void main(String args[]) { child obj2 = new child(); obj2.a = 2; obj2.b = 4; parent r; r = obj2; r.display(); } }Options6428
Which of the following values indicate range?
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.