Image.replicate#

Image.replicate(n: int = 1) → Self[source]#

Replicate image pixels

Parameters:

n (int, optional) – replication factor, defaults to 1

Returns:

image with replicated pixels

Return type:

Image

Create an image where each input pixel becomes an \(n \times n\) patch of pixel values. This is a simple way of upscaling an image.

Example:

>>> from machinevisiontoolbox import Image
>>> img = Image.Random(size=5)
>>> img.print()
   215  78 148  39 200
   147 181  53 119   5
   246  91 135  19 101
   181 118  15 152  36
   204 233  31  17  54
>>> bigger = img.replicate(2)
>>> bigger.print()
   215 215  78  78 148 148  39  39 200 200
   215 215  78  78 148 148  39  39 200 200
   147 147 181 181  53  53 119 119   5   5
   147 147 181 181  53  53 119 119   5   5
   246 246  91  91 135 135  19  19 101 101
   246 246  91  91 135 135  19  19 101 101
   181 181 118 118  15  15 152 152  36  36
   181 181 118 118  15  15 152 152  36  36
   204 204 233 233  31  31  17  17  54  54
   204 204 233 233  31  31  17  17  54  54

Note

  • Works only for greyscale images.

  • The resulting image is “blocky”, apply Gaussian smoothing to reduce this.

References:
Seealso:

decimate