Image Processing (imgproc module)

In this section you will learn about the image processing (manipulation) functions inside OpenCV.

@subpage tutorial_gausian_median_blur_bilateral_filter

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Let's take a look at some basic linear filters!
@subpage tutorial_erosion_dilatation

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Let's change the shape of objects!
@subpage tutorial_opening_closing_hats

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Here we investigate different morphology operators
@subpage tutorial_hitOrMiss

Languages: C++, Java, Python

Compatibility: > OpenCV 2.4

Author: Lorena García

Learn how to find patterns in binary images using the Hit-or-Miss operation
@subpage tutorial_morph_lines_detection

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Theodore Tsesmelis

Here we will show how we can use different morphological operators to extract horizontal and vertical lines
@subpage tutorial_pyramids

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

What if I need a bigger/smaller image?
@subpage tutorial_threshold

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

After so much processing, it is time to decide which pixels stay
@subpage tutorial_threshold_inRange

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Rishiraj Surti

Thresholding operations using inRange function.
@subpage tutorial_filter_2d

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn to design our own filters by using OpenCV functions
@subpage tutorial_copyMakeBorder

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to pad our images
@subpage tutorial_sobel_derivatives

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to calculate gradients and use them to detect edges
@subpage tutorial_laplace_operator

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn about the Laplace operator and how to detect edges with it
@subpage tutorial_canny_detector

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn a sophisticated alternative to detect edges
@subpage tutorial_hough_lines

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to detect lines
@subpage tutorial_hough_circle

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to detect circles
@subpage tutorial_remap

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to manipulate pixels locations
@subpage tutorial_warp_affine

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to rotate, translate and scale our images
@subpage tutorial_histogram_equalization

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to improve the contrast in our images
@subpage tutorial_histogram_calculation

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to create and generate histograms
@subpage tutorial_histogram_comparison

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn to calculate metrics between histograms
@subpage tutorial_back_projection

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to use histograms to find similar objects in images
@subpage tutorial_template_matching

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to match templates in an image
@subpage tutorial_find_contours

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to find contours of objects in our image
@subpage tutorial_hull

*Languages:* C++, Java, Python

*Compatibility:* \> OpenCV 2.0

*Author:* Ana Huamán

Where we learn how to get hull contours and draw them

@subpage tutorial_bounding_rects_circles

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to obtain bounding boxes and circles for our contours
@subpage tutorial_bounding_rotated_ellipses

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to obtain rotated bounding boxes and ellipses for our contours
@subpage tutorial_moments

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn to calculate the moments of an image
@subpage tutorial_point_polygon_test

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Ana Huamán

Where we learn how to calculate distances from the image to contours
@subpage tutorial_distance_transform

Languages: C++, Java, Python

Compatibility: > OpenCV 2.0

Author: Theodore Tsesmelis

Where we learn to segment objects using Laplacian filtering, the Distance Transformation and the Watershed algorithm.

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Image Processing (imgproc module)

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