Dlib provides a high-performance face recognition algorithm based on deep learning, and the model can achieve 99.38% recognition accuracy of labeled faces in outdoor data...
The concept of AUGMENTED reality can be defined as technology that subtly merges virtual information with the real world. In this section, we'll learn how...
Based on unmarked augmented reality, camera pose estimation can be derived from images to find the corresponding relationship between known points in the environment and...
This article describes how to calculate the size of the detected contour using an image moment-based approach or using the OpenCV function cv2.contourArea() and how...
Contour usually describes the key information of object boundary and contains the main information about object shape, which can be used for shape analysis and...
In mathematics, moments represent specific quantitative measurements of the shape of a function. In the field of computer data, image moment can be regarded as...
Hu invariant moments hold translation, scaling, and rotation invariant, while all moments (except the seventh moment) are invariant for reflection. The seventh moment is altered...
Contour usually describes the key information of object boundary and contains the main information about object shape, which can be used for shape analysis and...
Since the histogram reflects the intensity distribution of pixel values in the image, this function can also be used to compare images. In this section,...
CLAHE is a variant of adaptive histogram equalization (AHE), the difference being that contrast enhancement is limited. Noise in relatively uniform areas of the image...
In this article, you will learn how to use the OpenCV function cv2.equalizehist () to perform histogram equalization and apply it to grayscale and color...
The cv2.calchist () function is used in OpenCV to compute histograms of one or more arrays. Therefore, this function can be applied to single-channel image...
The cv2.calchist () function is used in OpenCV to compute histograms of one or more arrays. Therefore, this function can be applied to single-channel image...
Histograms are a powerful technique for better understanding image content. For example, many cameras display a histogram of the scene being captured in real time...
In order to better represent color, people have established a variety of color models to describe different colors in one-dimensional, two-dimensional and three-dimensional coordinate systems....
Color mapping is the operation of mapping an image from one color space to another color space, usually coloring a grayscale image into an equivalent...
Guide language "black and white color, is so simple," old photo coloring, is a kung fu, time-consuming and laborious. Coloring old photos is also an...