When we look at a shiny surface we see a bright spot at certain viewing direction this is called?
• Specular reflection • When we look at an illuminated shiny. surface, such as polished metal, an apple, or a person’s forehead, we see a highlight, or bright spot, at certain viewing directions. • This phenomenon, called. specular.
What happens when light falls on a shiny surface?
When light falls on the shiny surface of an object, it sends back the light. This process is called reflection. The objects having shiny or polished surface reflects more light compared to the objects having a dull or unpolished surface.
Why does a mirror have to be smooth and shiny in order for you to see your reflection?
If the surface is smooth and shiny, like glass, water or polished metal, the light will reflect at the same angle as it hit the surface. Light reflects from a smooth surface at the same angle as it hits the surface. For a smooth surface, reflected light rays travel in the same direction.
Which method contains linked list of surfaces?
Although the A buffer method requires more memory, but different surface colors can be correctly composed using it. Being a descendent of the Z-buffer algorithm, each position in the buffer can reference a linked list of surfaces.
What are the two types of surface detection methods?
The identification and removal of these surfaces is called Hidden-surface problem. There are two approaches for removing hidden surface problems − Object-Space method and Image-space method.
How does Z buffer algorithm determine which surfaces are hidden?
Z-buffer, which is also known as the Depth-buffer method is one of the commonly used method for hidden surface detection. It is an Image space method. Image space methods are based on the pixel to be drawn on 2D. For these methods, the running time complexity is the number of pixels times number of objects.
Which algorithm is required two different buffers?
Depth buffer algorithm requires 2 arrays, intensity and depth each of which is indexed by pixel coordinates (x, y).
What is Z buffer technique?
Z-buffering, also known as depth buffering, is a technique in computer graphics programming. It is used to determine whether an object (or part of an object) is visible in a scene. The Z buffer is a two-dimensional array (X and Y) that stores the Z-value of each screen pixel.
What is Z buffer algorithm?
The z-Buffer algorithm is one of the most commonly used routines. It is simple, easy to implement, and is often found in hardware. The idea behind it is uncomplicated: Assign a z-value to each polygon and then display the one (pixel by pixel) that has the smallest value.
Which is the best line algorithm to balance the processing load among the processors?
Which is the best line algorithm to balance the processing load among the processers? Explanation: If there are ‘n’ processes then this algorithm divides it into number of partitions and generates line segments. Explanation: In Parallel line algorithm each processors calculates pixel positions.
Which algorithm is a faster method for calculating pixel position?
DDA algorithm
Which of these is a characteristic of midpoint circle algorithm?
which of these is a characteristic of midpoint circle algorithm? Produces pixel points for an semicircle.
Which display devices allows us to walk around an object and view it from different side?
10. Which display devices allows us to walk around an object and view it from different sides. Explanation: 3D display devices allows user to view the object from different sides.
Which one is not a type of basic fill styles?
Which one is not a type of basic fill styles? Explanation: Dark fill is not a type of basic fill style, rest of them is the basic fill styles. Explanation: Rectangular fill pattern is called tiling or tiling pattern.
Which among the following is best suited for a smooth line drawing on the screen?
Question 8: Which of the following is a better option for drawing a smooth line on the screen? Explanation: Since it uses an electron beam which acts like a pencil to build a line on the panel, Random scan display is ideally adapted for line drawing.
What is the equation used for obtaining R value in terms of HSI components?
What is the equation used for obtaining R value in terms of HSI components? a) R=I[1-(S cosH)/cos(60°-H) ].