How do I smooth an image in Matlab?

Apply Gaussian Smoothing Filters to Images

1. I = imread(‘cameraman.
2. figure imshow(I) title(‘Original image’)
3. figure imshow(Iblur1) title(‘Smoothed image, \sigma = 2’)
4. figure imshow(Iblur2) title(‘Smoothed image, \sigma = 4’)
5. figure imshow(Iblur3) title(‘Smoothed image, \sigma = 8’)

How do you create a Gaussian curve in Matlab?

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1. You can use Matlab function to construct Gaussian function :
2. x = 0:0.1:10;
3. y = gaussmf(x,[2 5]);
4. plot(x,y)

How do you sharpen an image in Matlab?

Sharpen the image using the imsharpen function and display it. b = imsharpen(a); figure, imshow(b) title(‘Sharpened Image’);

What is image smoothing and sharpening?

Image smoothing is a rapid process to soften edges and corners of the image. However, the image suffers from random noise. On the other hand, image sharpening refers to sharpen edges and correct the image even it has little defects. These operations will come under image enhancement.

What are sharpening filters?

Sharpening filters are used to enhance the edges of objects and adjust the contrast and the shade characteristics. In combination with threshold they can be used as edge detectors. Sharpening or high-pass filters let high frequencies pass and reduce the lower frequencies and are extremely sensitive to shut noise.

How does Imfilter work in Matlab?

The imfilter function computes the value of each output pixel using double-precision, floating-point arithmetic. If the result exceeds the range of the data type, then imfilter truncates the result to the allowed range of the data type. If it is an integer data type, then imfilter rounds fractional values.

What is spatial mask?

Spatial Filtering technique is used directly on pixels of an image. Mask is usually considered to be added in size so that it has specific center pixel. This mask is moved on the image such that the center of the mask traverses all image pixels.