State whether the following statements are true or false. Justify your answer. (

Question

State whether the following statements are true or false. Justify your answer. (a) The spatial resolution of image is the length of pixel in cm. or inch. (b) The Data Controller simply reads each successive byte of data from the frame buffer. (c) In perspective projection size varies directly with distance. (d) Cohen -Sutherland algorithm for line clipping cannot be used both in 2D and 3D. (e) In open GL, graphical primitives are defined by vertices which are transformed by open GL, the sequence of operation is: Model view transformation rightarrow Projection transformation. illumination rightarrow Clipping rightarrow view port transformation.

Explanation / Answer

a) The spatial resolution of image is the length of pixel in cm. or inch.
Solution:- The given statement is false because the correct statement is "The spatial resolution of image is reffered in terms of pixel per inch or dpi."

Explanation:- As we know that Spatial resolution related to the number of pixels and on the basis of image it is commonly reffered to the terms of "Dots per inch(dpi)" or "Pixels per inch".
=========================================

b) The data controller simply reads each successive byte of data from the frame buffer.
Solution:- The given statement is false because the correct statement is "the display controller simply reads each succesive byte of data from the frame buffer."

Explanation:- As we know that VDC means Video Display Controller is the main component in video signal generator which is responsible for the generation of TV signals in a computing system.
=========================================

c) In perspective projection size varies directly with distance.
Solution:- The given statement is false because the correct statement is "In perspective projection size varies inversely with distance."

Explanation:- As we know that in case of perspective projection, the distance from projection's center to the plane is finite or extent and object's size varies inversely with the distance which looks it more naturalistic.
==========================================
d) Cohen-Sutherland algorithm for line clipping cannot be used both in 2D and 3D.
Solution:-The given statement is false because the correct statement is "Cohen-Sutherland algorithm for line clipping can be used both in 2D and 3D."

Explanation:- According to the Cohen-Sutherland algorithm, it is used for both 2D and 3D version for line clipping. In case of 2D each endpoint of a line is assigned 4 bit code and outcode for 3D clipping is a 6-bit code.
==========================================
e) In open GL, graphical primitives are defined by vertices which are transformed by open GL, the sequence of operation is:
Model view transformation -> Projection transformation
illumination -> Clipping -> view port transformation.
Solution:- The given statement is false because the sequence of operation is not correct.

Explanation:- The correct sequence of operation in case of GL, graphics pipeline is

"Model View transformation -> Illumination -> Projection transformation -> Clipping -> Viewport transformation -> Resterization -> Display"

Thankyou

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.