opencsp.app.target.target_color.lib.ImageColor

Tool for matching pixels between two images and viewing results.

class opencsp.app.target.target_color.lib.ImageColor.ImageColor(image: ndarray)

Bases: object

Class containing image processing and color matching methods on RGB images.

crop_image(region: LoopXY) → None

Masks image according to given region.

Parameters:

region (LoopXY) – Active pixel region

classmethod from_file(file: str) → ImageColor

Creates instance by directly loading image file.

Parameters:

file (str) – File name

match_indices(rgb: ndarray, thresh: float) → tuple[ndarray, ndarray]

Calls returns the indices of pixels matching given color in form (ys, xs).

Parameters:

• rgb (ndarray) – Length 3 vector to match in current image

• thresh (float) – Threshold, in radians, to consider a match

Returns:

ys/xs – Y and X pixel indices that match input RGB vector within given threshold

Return type:

ndarray

match_mask(rgb: ndarray, thresh: float) → ndarray

Returns a mask of all pixels whos RGB vectors are within given threshold (in radians) to the given RGB value.

Parameters:

• rgb (ndarray) – Length 3 color vector to match in current image

• thresh (float) – Threshold, in radians, to consider a match

Returns:

Mask of matching pixels.

Return type:

np.ndarray

Raises:

ValueError – If input vector is not size 3

plot_normalized(ax: Axes | None = None, **kwargs) → Axes

Plots normalized RGB image

Parameters:

ax (plt.Axes, optional) – Axes to plot on, by default None. If None, plt.gca() is used.

Returns:

Matplotlib axes

Return type:

plt.Axes

plot_unprocessed(ax: Axes | None = None, **kwargs) → Axes

Plots unprocessed RGB image

Parameters:

ax (plt.Axes, optional) – Axes to plot on, by default None. If None, plt.gca() is used.

Returns:

Matplotlib axes

Return type:

plt.Axes

smooth_image(ker: ndarray) → ndarray

Smoothes image using OpenCV’s filter2D.

Parameters:

• image (ndarray) – NxMx3 image to smooth

• ker (ndarray) – 2d smoothing kernel

Returns:

NxMx3 smoothed image

Return type:

ndarray