Module color

source code

Created on Jan 11, 2011

Author: bolme

Classes

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Histogram
Basically a wrapper around an OpenCV histogram.

ColorTest

Functions

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pv.Histogram

HSHist(im, h_bins=32, s_bins=32, mask=None, normalize=True)
Compute the hue saturation histogram of an image.

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pv.Histogram

RGBHist(im, r_bins=8, g_bins=8, b_bins=8, mask=None, normalize=True)
Compute the rgb saturation histogram of an image.

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pv.Image

hsBackProjectHist(im, fg_hist, bg_hist=None)
Compute the hue saturation histogram of an image.

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pv.Image

rgbBackProjectHist(im, fg_hist, bg_hist=None)
Compute the hue saturation histogram of an image.

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Variables

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HIST_HS = 'HIST_HS'

HIST_RGB = 'HIST_RGB'

__package__ = 'pyvision.other'

Function Details

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HSHist(im, h_bins=32, s_bins=32, mask=None, normalize=True)

source code

Compute the hue saturation histogram of an image. (Based on OpenCV example code).

Parameters:

im (pv.Image) - the image
h_bins (int) - the number of bins for hue.
s_bins (int) - the number of bins for saturation.
mask (cv.Image or np.array(dtype=np.bool)) - an image containing a mask

Returns: pv.Histogram

an OpenCV histogram

RGBHist(im, r_bins=8, g_bins=8, b_bins=8, mask=None, normalize=True)

source code

Compute the rgb saturation histogram of an image. (Based on OpenCV example code).

Parameters:

im (pv.Image) - the image
r_bins (int) - the number of bins for hue.
g_bins (int) - the number of bins for hue.
b_bins (int) - the number of bins for hue.
mask (cv.Image or np.array(dtype=np.bool)) - an image containing a mask

Returns: pv.Histogram

an OpenCV histogram

hsBackProjectHist(im, fg_hist, bg_hist=None)

source code

Compute the hue saturation histogram of an image. (Based on OpenCV example code).

Parameters:

im (pv.Image) - the image
fg_hist (pv.Histogram) - the histogram
bg_hist (pv.Histogram)

Returns: pv.Image

an OpenCV histogram

rgbBackProjectHist(im, fg_hist, bg_hist=None)

source code

Compute the hue saturation histogram of an image. (Based on OpenCV example code).

Parameters:

im (pv.Image) - the image
fg_hist (pv.Histogram) - the histogram
bg_hist (pv.Histogram)

Returns: pv.Image

an OpenCV histogram