The Logarithmic Contrast Stretching is mostly used for _____________. (a.) Brighter parts of images (b.) Darker parts of images (c.) Higher difference in grey levels (d.) Lower difference in grey levels
Answers
Answer:
The logarithmic transformation or contrast stretching is to increase the dynamic range of the gray levels in the image being processed. The logarithmic stretch is useful for enhancing the contrast between the darks and the lights.
These are used to controls the slope of the functions.
It improves an image by stretching the range of intensity values it contains to make full use of possible values.
It is restricted to a linear mapping of input and output values.
Mostly these are used in image processing, such as brighter and darker parts of images.
Answer:
The logarithmic contrast stretching is used in (b) Darker parts of the image.
Explanation:
Logarithmic contrast stretching is used while working with the greyscale images. It is used to change the intensity values which may be used to isolate certain information.
In addition, the colour intensity is modified to increase the contrast to make dark colours lighter. The input and output of the images are both shades of grey but with different intensities. When contrast stretching is performed, the maximum and lower pixel have to be specified to get the desired output.