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с 01.01.1921 по настоящее время Россия
В динамично развивающейся области компьютерного зрения особое внимание уделяется комплексному распознаванию изображений. Оно имеет несколько реальных применений, включая системы распознавания лиц и беспилотные автомобили. Благодаря внедрению алгоритмов глубокого обучения в системах распознавания изображений произошли значительные функциональные улучшения, а также заметный рост точности и эффективности. В этой статье рассматривается применение языка программирования Python в области распознавания изображений с использованием наборов данных. Основной упор делается на аналитические методологии, проблемы, требующие решения, и их практическое применение. Целью исследования является подготовка статьи о сложных моделях распознавания изображений с использованием множества библиотек и инструментов Python, включая TensorFlow, Keras и PyTorch. Исследование наглядно показывает, насколько важны наборы данных для обучения и оценки этих систем. Целью данного исследования является проведение тщательного анализа последних разработок и возможных будущих направлений в области технологий распознавания изображений.
распознавание изображений, Python, TensorFlow, Keras, PyTorch
In the area of artificial intelligence, image recognition is a very useful tool. Automatic cars, medical images, and systems that recognize faces are just a few of the areas that have gained from it. In the area of image recognition, computers are taught to recognize and sort pictures in a way that is similar to how humans see. Deep learning has made big changes in this area. It is now easy to make sorting systems that are more accurate and work faster. Python has quickly become the language of choice for making picture recognition systems because it is both powerful and easy to use. This article shows readers how to build an image recognition system in Python, from getting the dataset ready to be used to checking how well the model works. We are looking into this complicated subject to make the steps easier to follow and to create a guide for writers, hackers, and anyone else who wants to use picture recognition in their work [1].
The basis of each machine-learning model is a well-designed example. Image recognition often utilizes multi-image files. The COCO [3] collection has greatly improved the image recognition capacities. Ensuring consistent picture sizes is crucial when resizing images, since it serves as the foundation for machine learning. Ensuring consistency in input variables is vital for algorithms to effectively learn and reveal patterns. By utilizing the resize() function in OpenCV, it is possible to modify the dimensions of pictures to guarantee that they adhere to a 3 predetermined width and height. The maintenance of uniformity is of utmost importance in both the training and testing stages, as it facilitates the consistent extraction and analysis of features over a wide range of datasets [2]. Grayscaling Changing images from color to grayscale is a way to make things easier, which makes a lot of machine-learning apps much easier to use. You can speed up the working time and reduce the amount of resources the program needs by getting rid of the color information and focusing on changes in intensity. The OpenCV cvtColor() method makes it easier to convert RGB images to grayscale and then shrink data from three channels to one for better storage. This step is very helpful when color doesn't play a big part in finding or analyzing patterns. Noise Reduction The presence of image noise significantly impacts the performance of machine learning models by obscuring features and resulting in less precise predictions. To address this issue, techniques like as fading, smoothing, and filtering are employed. OpenCV has many functions, such as GaussianBlur() and medianBlur(), which may be employed to include these effects, enhance image smoothness, and eliminate stochastic variations in pixel intensity. These techniques are essential for improving picture quality because they enable computers to recognize important patterns without interference from unimportant noise [2].
Normalization is the process of putting an image or dataset's pixel intensity values on a standard scale, which is generally from 0 to 1. This process is very important for models that are sensitive to the amount of data they are given because it speeds up convergence and makes the training process better. By normalizing pictures, we make sure that the amounts of brightness are all set to the same, which makes the learning setting fairer and more effective. Normalization tools, like scikit-image's normalize() function, are very important in preprocessing steps because they make sure that all the raw data is treated equally and consistently[2]. Binarization is a technique that transforms grayscale photos into binary data, making it easier to distinguish important features or objects from the rest of the image. The analysis process is facilitated by utilizing OpenCV's threshold() function to generate a threshold, which transforms photos into either black or white. This method showcases effectiveness in tasks like as identifying forms, recognizing objects, and extracting features, where it is crucial to differentiate between the item and the background [2]. Increasing an image's contrast can help draw attention to important details and prominent elements, which are essential for correctly spotting patterns. The equalizeHist() function in OpenCV simplifies the task of equalizing the histogram by modifying the pixel intensities, hence improving the image's contrast. This alteration enhances the capability of machine learning algorithms to see and differentiate hidden features, hence improving their ability to learn from and effectively understand visual input [2].
The development of the image recognition model is of utmost importance, requiring a balanced integration of complexity and efficiency. Choosing the Suitable Model The utilization of deep learning models in the field of recognizing images encompasses a wide array of architectures, spanning from Convolutional Neural Networks (CNNs) to more contemporary advancements like as Transformers. The selection of a model is mostly contingent upon the intricacy of the work at hand and the computational resources at hand. Convolutional Neural Networks (CNNs) continue to be the preferred architecture for the majority of image recognition tasks owing to their efficacy in processing image data.
Figure-1: Image Recognition Models [6]
In the model design process, the layers and parameters of the architecture are specified. The parameters involved in this process include the selection of activation functions, the number of layers, the size of filters in convolutional layers, and the pooling strategy. The iterative nature of the design process necessitates several iterations of testing to ascertain the most appropriate architecture for the given goal. Implementation in Python Building the Environment the initial step in the implementation process is the establishment of the Python environment, which encompasses the acquisition of essential libraries and frameworks. TensorFlow and Keras are widely favored because of their extensive capabilities and user-friendly interface. Before starting training, it is necessary to preprocess the photographs to guarantee uniformity in both size and format. In this stage, it may be necessary to do image scaling, pixel value normalization, and conversion to grayscale or RGB, depending on the unique model architecture. After preparing the dataset and designing the model, the subsequent phase involves training the model. The procedure entails inputting the preprocessed pictures into the model, the model's weights are adjusted according to its performance, and this iterative process is repeated throughout numerous epochs to enhance accuracy.
Figure-2: Image Recognition [7]
A comprehensive evaluation approach includes both quantitative metrics and qualitative assessments to guarantee the model's effectiveness across diverse circumstances. Accuracy The concept of accuracy, although serving as a broad measure of performance, can be deceptive, particularly when dealing with imbalanced datasets. Precision, Recall, and F1 Score These measures offer a more detailed perspective on the performance of the model, emphasizing its capacity to accurately detect and avoid overlooking pertinent events. Confusion Matrix Provides a valuable understanding of the model's mistake patterns, which is essential for creating incremental enhancements.
In conclusion, the process of creating an image recognition system using Python encompasses a thorough progression from the curation of datasets to the assessment of models, hence demonstrating Python's capacity to connect intricate principles with real-world applications. The above procedure, even though it is complicated, shows how important it is to carefully prepare datasets, choose model architectures, and find the right balance between speed and accuracy during the formulation stage. The extensive library of Python makes it easier to complete the implementation phase, which emphasizes the significance of preprocessing and model training as crucial steps that directly affect the system's performance. Evaluation metrics function not just as markers of achievement but also as tools for iterative enhancement, highlighting the practicality and dependability of the model in real-world scenarios. This investigation into the utilization of Python for picture identification not only exemplifies the progress made in artificial intelligence technology but also highlights the possibilities for innovation in several industries, ranging from healthcare to security. The ongoing improvement of these systems, propelled by the emergence of new data and advancements in technology, continues to be crucial as the field progresses. This expedition, replete with obstacles and prospects, exemplifies the ever-changing essence of AI research and development, emphasizing the ceaseless pursuit of knowledge and enhancement in the endeavor to replicate human-level comprehension of the visual realm.
1. N. Khandelwal, “Image Processing in Python: Algorithms, Tools, and Methods You Should Know,” neptune.ai, Aug. 25, 2023. Available: https://neptune.ai/blog/image-processingpython
2. M. Patel, “The Complete Guide to Image Preprocessing Techniques in Python,” Medium, Oct. 23, 2023. Available: https://medium.com/@maahip1304/the-complete-guide-to-imagepreprocessing-techniques-in-python-dca30804550c
3. “COCO - Common Objects in Context.” Available: https://cocodataset.org/#overview
4. “Image Recognition Models: Three Steps To Train Them Efficiently,” kili-website. Available: https://kili-technology.com/data-labeling/computer-vision/image-annotation/threesteps-to-train-image-recognition-efficiently
5. “How to Evaluate An Image Classification Model | Clarifai Guide.” Available: https://docs.clarifai.com/tutorials/how-to-evaluate-an-image-classification-model/
6. Admin, “Deep Learning in Image Recognition: Making it into a Futuristic World | IDS-Software Solutions,” IDS-Software Solutions | IDS Enabling Success, Nov. 11, 2019. Available: https://ids-technologies.in/deep-learning-in-image-recognition-making-it-into-a-futuristic-world/
7. C. Dilmegani, “Image Recognition: In-depth Guide for 2024,” AIMultiple: High Tech Use Cases & Tools to Grow Your Business, Jan. 11, 2024.
8. Poluektov A.V., Makarenko F.V., Yagodkin A.S. The use of third-party libraries when writing programs for processing statistical data // Modeling of systems and processes. - 2022. – Vol. 15, No. 2. – pp. 33-41.
