1: Edge extraction
1. Threshold segmentation and color reversal of image
2. Edge extraction
2: Image filtering
1. Read the original drawing
2. Mean filtering
3. Median filtering
4. Gaussian filtering
5. Gaussian edge detection
3: Edge detection operator
1. Display the original drawing
2. Reverse the image
3. Image edge detec ...
Posted by kliopa10 on Sun, 29 Mar 2020 05:47:54 -0700
In this chapter, we will recognize the handwritten dataset again, but use SVM instead of kNN.
Recognize handwritten numbers
In kNN, we directly use pixel intensity as feature vector. This time we will use the directional gradient histogram (HOG) as the feature vector.
Here, we use the second-order moment to correct the skew of the image ...
Posted by gurjit on Sun, 29 Mar 2020 00:05:02 -0700
By hugging face
This chapter describes the most common use cases when using the Transformers library. The available models allow for many different configurations and are highly generic in use cases. This paper introduces the simplest method and shows the usage of tasks such as question answering, sequence classific ...
Posted by rel on Mon, 23 Mar 2020 23:54:18 -0700
Article link: http://blog.csdn.net/poem_qianmo/article/details/21176257
5: Off color channel & multi-channel image mixing
In order to better observe the characteristics of some image materials, sometimes it is necessary to display and adjust the components of three RGB color channels respectivel ...
Posted by Bullet on Sun, 15 Mar 2020 01:43:34 -0700
Compile and install OpenCV
0-1. Uninstall opencv and opencv_contrib installed by pip or conda before installation:
pip uninstall opencv-contrib-python
pip uninstall opencv-python
0-2.install NumPY in Python environment first
pip install numpy
1. Download OpenCV source code: https://github.com/o ...
Posted by baitubai on Fri, 06 Mar 2020 21:34:14 -0800
If the company wants to study the AR technology in advance, it will try to study the arttoolkit. The Internet is full of examples about compiling arttoolkit 5. Arttoolkit 5 has not been updated for a long time, and arttoolkit x is the latest version, but it has not found a way to compile arttoolkit x ...
Posted by bpops on Wed, 04 Mar 2020 00:18:11 -0800
1, Class definition in OpenCV
The definition of KalmanFilter class
class CV_EXPORTS_W KalmanFilter
CV_WRAP KalmanFilter(); //Construct the default Kalman filter object
CV_WRAP KalmanFilter(int dynam ...
Posted by Frederick on Mon, 02 Mar 2020 21:47:56 -0800
Hough transform is a feature extraction technology in image processing. It detects objects with specific shapes (mathematical model + parameters) through a voting algorithm. In the (one) parameter space, by calculating the local maximum value of the cumulative result, a set conforming to the specific s ...
Posted by suz_1234 on Wed, 26 Feb 2020 19:20:32 -0800
Basic knowledge summary:
API detailed explanation:
1. Affine transformation and perspective transformation
2. The definition of image coordinate system, camera coordinate system and world coordinate system, and the transformation relationship a ...
Posted by freeak08 on Tue, 25 Feb 2020 21:14:30 -0800
Course name | zero basic entry-level in-depth learning
Lecturer: Sun Gaofeng, senior R & D Engineer of Baidu deep learning technology platform Department
Teaching time: 20:00-21:00 on Tuesday and Thursday
01 reading guidance
This course is Baidu's official zero basic in-depth learning course. It is mainly for students who have no in-dept ...
Posted by Supplement on Mon, 24 Feb 2020 07:09:05 -0800