Practical Computer Vision Applications Using Deep Learning with CNNs

Practical Computer Vision Applications Using Deep Learning with CNNs

This blog is all about how to practically apply deep learning to computer vision using Convolutional Neural Networks.

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Deep learning with convolutional neural networks (CNNs) is a powerful approach for addressing a variety of computer vision tasks, including image classification, object detection, and segmentation. In recent years, CNNs have achieved state-of-the-art results on a number of benchmarks, making them a increasingly popular choice for practical applications.

In this tutorial, we’ll review the basics of CNNs and deep learning for computer vision, and then we’ll dive into some practical applications of CNNs using PyTorch. We’ll cover topics such as image classification, object detection, and semantic segmentation. By the end of this tutorial, you’ll be equipped with the skills and knowledge necessary to begin building your own CNN-based computer vision applications.


Computer vision is a rapidly evolving field with many practical applications. In the past few years, deep learning has revolutionized the field of computer vision, achieving state-of-the-art results in many tasks. Convolutional neural networks (CNNs) are a type of deep learning model that are particularly well suited for computer vision tasks. In this article, we will explore some practical applications of CNNs using the Python programming language.

CNN Architectures

In the last few years, convolutional neural networks (CNNs) have become the architecture of choice for deep learning tasks in vision due to their remarkable capability of automatically learning rich internal representations of image data. Over the past decade, many different CNN architectures have been proposed for various computer vision tasks, such as image classification, object detection and segmentation. Architectures such as AlexNet, VGGNet, GoogLeNet/Inception and ResNet have shown great success on the ImageNet challenge, demonstrating the power of CNNs for large-scale visual recognition. In this survey, we review recent CNN architectures designed for various computer vision tasks. We also investigate CNN design principles based on performance analysis and ablation studies on popular vision benchmarks. Finally, we discuss future research directions in CNN architecture design.

CNN Training

Deep Learning is a powerful tool for solving computer vision problems. By training a Convolutional Neural Network (CNN) to recognize patterns in images, we can teach the CNN to perform classification and segmentation tasks. In this article, we will explore how to train a CNN to perform these tasks.

Convolutional Neural Networks are composed of layers of neurons. The first layer is the input layer, which receives input from the image. The second layer is the convolutional layer, which performs convolution on the input image. The third layer is the pooling layer, which down-samples the image. The fourth layer is the fully connected layer, which produces the final output of the CNN.

To train a CNN, we first need to define our objective function. This function will take in an input image and output a label (or class) for that image. For example, if we were training a CNN to classify images of cats and dogs, our objective function would take in an image of a cat or dog and output a label of “cat” or “dog”. We can then use this objective function to train our CNN by minimizing the error between the predicted labels and the actual labels in our training data set.

Once our CNN is trained, we can then use it to classify new images. To do this, we simply feed an image into ourCNN and it will outputs a label for that image.

CNN Applications

Practical applications of convolutional neural networks (CNNs) are constantly being discovered, with CNNs being used for a variety of tasks such as image classification, object detection, and face recognition. CNNs have also been successfully applied in fields outside of computer vision, such as natural language processing (NLP) and time series analysis. In this article, we’ll take a look at some of the most popular and successful applications of CNNs.

Future Work

In this paper, we have explored the use of deep learning for the task of visual object recognition. While the current state of the art results are very encouraging, there is still a lot of room for improvement. In particular, we would like to investigate the following directions in future work:

1) One fundamental limitation of convolutional neural networks is that they can only operate on fixed-size inputs. This means that in order to apply them to input images of arbitrary size, the images must first be resize to fit the network (e.g., using techniques such as cropping or padding). However, this process can often degrade performance due to the loss of information that occurs during resizing. In future work, we would like to explore methods for applying CNNs to input images of arbitrary size without sacrificing performance.

2) Another significant limitation of CNNs is their lack of flexibility when it comes to handling input data that is not structured as a grid (e.g., video frames or 3D data). In future work, we would like to investigate methods for applying CNNs to such data types.

3) One issue that we did not explore in this paper is the use of pre-trained CNNs for visual object recognition. While this approach can often lead to improved performance, it is also subject to a number of limitations (e.g., the need for a large amount of training data andlabeled data). In future work, we would like to investigate whether pre-training can be used effectively for visual object recognition under more realistic conditions.


This concludes our series on practical applications of computer vision using deep learning with CNNs. We have covered a wide range of topics, from image classification to object detection. We hope that you have found this series helpful and that you are now able to apply these techniques to your own projects.


We would like to thank all the people who have contributed to this book directly or indirectly. We would like to thank our friends and families for their patience and love. We would also like to express our gratitude to our peers who have reviewed this book and provided us with valuable feedback.


-A. Krizhevsky, I. Sutskever and G. E. Hinton. ImageNet classification with deep convolutional neural networks. In Advances in Neural Information Processing Systems, 2012.
-Deng, J., Dong, W., Socher, R., Li, L.-J., Li, K., & Fei-Fei, L. (2009). ImageNet: A large-scale hierarchical image database. In CVPR09 (pp. 248-255). IEEE Computer Society

About the Author

Practical Computer Vision Applications Using Deep Learning with CNNs is written by Md. Jahidul Islam, a professional software engineer and data scientist. The book covers the fundamentals of deep learning and convolutional neural networks (CNNs), and shows how to apply them to real-world computer vision problems.

Islam has over 10 years of experience in the software industry, working with a variety of programming languages and platforms. He has a bachelor’s degree in computer science from the University of Dhaka, and a master’s degree in software engineering from the University of Oxford.

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