Image Processing Stuff

All of these implementations test library functions against manually written code, so expect slow execution times.

• bgr2gray.py converts an image from BGR to Gray

• noise_denoise.py Noisifies an image and then applies a median filter to it

• fourier-transform.py Brings an image to the frequency domain

• fourier-filters.py Applies multiple FFT-based filters: {gaussian,butterworth,ideal} (high,low)-pass filters

• homomorphic-filter.py Applies some homomorphic filters

• spatial-transforms.py Applies multiple spatial transformations (Negative, Log, Exp, Power)

• intensity-transforms.py Applies multiple spatial intensity transforms (pw-linear, bit-plane slicing)

• histogram.py Renders a histogram of the provided image (actual source in display_utils.py in Histogram)

• image-averaging.py Attempts to remove gaussian noise from image by averaging multiple noisy images

• laplacian.py Does some laplacian stuff (Image sharpening)

• spatial-filters.py Collections of all implemented spatial filters (WIP as of yet)

• erosion-dilation.py Applies morphological operators "erode", "dilate" and their mixups "opening mode" and "closing mode"

• ssim.py Implements SSIM

Utilities

• display_utils.py Implements a nice image layout engine:

side_by_side(LAYOUT, ...images)

# where LAYOUT is a layout descriptor:
Vertical(*elements)   # stacks elements vertically
Horizontal(*elements) # stacks elements horizontally
Spacer(SIZE)          # creates some empty space SIZE-wide (or long)
Tagged(TAG, LAYOUT, **options) # adds a caption to a given layout

[*INDEX]              # creates a multi-channel overlay of the mentioned indices
INDEX                 # copies the image referenced by images[INDEX]

named Matrix-like layouts can be created via nxm_matrix_view:

view = nxm_matrix_view(range(8), ['foo', 'bar'], 2, 2)

# -> A tagged matrix view
# Vertical
#   Tagged(foo)
#     Vertical
#       Spacer(40 px)
#       Vertical
#         Horizontal
#           0
#           1
#         Horizontal
#           2
#           3
#   Tagged(bar)
#     Vertical
#       Spacer(40 px)
#       Vertical
#         Horizontal
#           4
#           5
#         Horizontal
#           6
#           7