Image enhancement

Bài giảng Xử lý ảnh và ứng dụng: Nâng cao chất lượng ảnh (Image Enhancement) sẽ trang bị cho bạn các kỹ thuật cải thiện hình ảnh. Chương này đi sâu vào các phép biến đổi lân cận và kỹ thuật lọc phi tuyến median. Bạn sẽ học cách làm cho hình ảnh rõ nét, tăng cường chi tiết, và giảm nhiễu hiệu quả. Mời các bạn cùng tham khảo bài giảng để biết thêm chi tiết!

42p hoatrongguong03 15-05-2025 0 0   Download

"Machine Vision – Chapter 3: Intensity Transformations and Spatial Filtering" explores essential techniques in image preprocessing, including contrast enhancement, histogram equalization, and filtering methods such as smoothing and sharpening. These operations are fundamental for improving image quality and extracting meaningful features in machine vision applications.

70p phongtrongkim0906 16-05-2025 1 1   Download

Lesson "Machine Vision" Chapter 8 - Video Processing, compiled including the following main contents: Introduction; Acquisition; Post-acquisition Processing; Image Registration; Spatio-Temporal Processing; Enhancement and Restoration; Action detection / recognition; Video Processing with OpenCV.

49p phongtrongkim0906 16-05-2025 1 1   Download

This study presents a novel polyp segmentation approach using ResUnet++. Trained on Kvasir-SEG and CVCClinicDB, ResUnet++ significantly outperforms traditional UNet and ResUnet. Its residual blocks and attention mechanisms enhance feature extraction, leading to improved segmentation in challenging cases.

9p visarada 28-04-2025 1 1   Download

In this study, we propose the application of CycleGAN to generate T2 pulse sequence MRI images of the human brain from T2 Flair pulse sequence images of the same type and vice versa, thereby increasing the number of MRI images of various types.

8p viengfa 28-10-2024 5 2   Download

In this paper, we build a quadcopter for target tracking by integrating a embedded computer Raspberry Pi (RPI) with a Pixhawk flight controller. This article also proposes a lightweight Tracking algorithm that can be deployed on Raspberry Pi, this algorithm harnesses advanced image processing and computing capabilities to significantly enhance target tracking performance, thereby reducing the need for human intervention control in unmanned flights.

9p viengfa 28-10-2024 4 3   Download

This study introduces a solution that applies document analysis and recognition technologies to enhance document accessibility for individuals with visual impairments. The objective is to develop an algorithm capable of accurately analysing the content of document components and converting them into voice format.

14p viaburame 14-03-2025 4 1   Download

Photoelasticity images of pulsed laser ablation in water and in air were simulated by Finite Element Method. In the paper "Compare transient stress induced in in-air and in-water laser ablation using simulation method", the Von Mises stress distribution in the target is deduced from the simulated images and is compared between the two-ablation regimes. The result confirms that pulse laser ablation in the water can induced a stress about 100 times higher than that induced in ablation in the air.

4p xuanphongdacy09 29-09-2024 6 1   Download

CSR activities are very important not only to generate stakeholder attitudes and behaviors but also, over the long run, to build corporate/brand image, strengthen stakeholder–company relationships, and enhance stakeholders’ advocacy behaviors for the enterprises.

11p vifilm 11-10-2024 3 1   Download

The intricacies and limitations of AI-driven medical image analysis are the focus of this paper, particularly challenges in acquiring, preprocessing, and analyzing medical imaging data. We explore how Artificial Intelligence (AI) presents significant potential to revolutionize this field: improving diagnostic accuracy; streamlining workflows–even enhancing patient outcomes.

10p viyamanaka 06-02-2025 2 2   Download

In this paper, we propose a novel framework for natural language-based trackedvehicle retrieval based on CLIP model, one of the most effective models for image-text matching task. This framework leverages both appearance and motion information to enhance the matching accuracy of vehicle tracklet retrieval.

15p viyamanaka 06-02-2025 4 2   Download

Machine learning and computer vision play pivotal roles in detecting product defects across various industries, enhancing effectiveness, precision, and minimizing labor expenditures. This journalutilizes image manipulation through the OpenCV, coupled with machine learning employing the ResNet-50 model, to specifically identify surface defects and dimensions in bearings.

5p vibenya 31-12-2024 8 1   Download

Ultrasound tomography is a non-invasive imaging technique that seeks to determine the internal distribution of acoustic properties within the body by analyzing measured ultrasound data. Based on the distorted Born iterative method (DBIM), this work suggests employing resolution-jumping and beamforming techniques for tomographic ultrasound imaging.

11p vibenya 31-12-2024 12 2   Download

Digital Image Processing: Image Enhancement - Duong Anh Duc presents about Image Enhancement; Point Operations; Image Negative; Contrast Stretching; Compression of Dynamic Range; Image Averaging for noise reduction; Some Averaging Filters; Some Typical Histograms.

78p cocacola_08 21-11-2015 69 4   Download

Digital Image Processing: Image Enhancement Frequency domain methods - Duong Anh Duc provides about Image Enhancement - frequency domain methods; 1-d Fourier transform of a sequence; 2-d Fourier transform of a digital image; Fourier Transform of “Rice” Image; Importance of Phase Information in Images;...

86p cocacola_08 21-11-2015 67 4   Download

Digital Image Processing: Image Restoration - Duong Anh Duc includes Image Restoration; Restoration vs. Enhancement; Degradation Model; Gaussian noise; Erlang(Gama) noise; Exponential noise; Impulse (salt-and-pepper) noise; Plot of density function of different noise models.

81p cocacola_08 21-11-2015 67 4   Download

Digital Image Processing: Image Enhancement Spatial Filtering - Duong Anh Duc includes Image Enhancement - Spatial Filtering; How to specify T; Smoothing Filters; Image smoothing by averaging (lowpass spatial filtering); Image Sharpening; High-boost filtering; Prewitt operators.

40p cocacola_08 21-11-2015 62 3   Download

Trong các chương trước, chúng ta đã nghiên cứu một vài tác dụng của các phép toán xử lý ảnh nào đó trên các ảnh. Những kết quả này có thể được giải thích bằng các phép toán đơn giản. Vì thế, chúng ta không đề cập đến các kết quả lấy mẫu, độ phân giải không gian hay các phép toán phổ biến được nói đến như tăng cường ảnh (image enhancement). Trong phần 2, chúng ta sẽ đưa ra những câu hỏi về vấn đề lấy mẫu, độ phân giải và lọc tuyến tính, một phương pháp tiếp cận phổ biến sử dụng cho việc tăng cường ảnh.

23p kexauxi4 01-10-2019 53 8   Download

This study, which focuses on vocabulary teaching methods, is going to investigate the application of multimodality to the vocabulary learning of students from the perspectives of using images in some communicative activities to enhance students‟ vocabulary retention. The major aim of the research is to investigate whether the use of images in vocabulary teaching can help improve students‟ vocabulary retention. The participants in the study are students at Hanoi Architectural University.

86p closefriend09 16-11-2021 36 6   Download

The thesis mainly aims to solve the following tasks: Firstly, the thesis extensively analyzes a wide range of existing approaches for the ME detection in scientific document images. Then, the thesis investigates and proposes novel methods to improve the detection accuracy of MEs. After enhancing the detection accuracy of MEs, the thesis investigates and pro poses a framework to improve the accuracy of the recognition of MEs in scientific document images.

27p closefriend09 16-11-2021 24 4   Download