4,876 dokumen ditemukan
(Menampilkan 1-20 | Halaman 1 dari 244)
Urutkan
#
Judul
Penulis
Tahun
Akses
Jurnal Institusi
Analisis Histogram Steganografi Least Significant Bit Pada Citra Grayscale
Digital Zone: Jurnal Teknologi Informasi dan Komunikasi; Vol. 11 No. 1 (2020): Digital Zone: Jurnal Teknologi Informasi dan Komunikasi; 20-29
Kesadaran pentingnya keamanan data pada era digital saat ini ditandai dengan berkembangnya aplikasi keamanan data. Pada penelitian ini akan dilakukan analisis histogram terhadap suatu aplikasi keamanan data. Tujuan dari analisa ini adalah mengetahui ...
Jurnal Institusi
Enhancing Dental Image Segmentation Techniques: Edge Detection and Color Thresholding
Digital Zone: Jurnal Teknologi Informasi dan Komunikasi; Vol. 15 No. 1 (2024): Digital Zone: Jurnal Teknologi Informasi dan Komunikasi ; 94-104
Rapid advancements in medical technology, particularly in the field of dentistry, have led to significant progress in the application of medical imaging techniques to generate valuable image data. The resulting images often exhibit heterogeneous inte...
Jurnal Institusi
Metode Pusat dan Circular Hough Transformation untuk Mendeteksi Lingkaran pada Sebuah Citra
Digital Zone: Jurnal Teknologi Informasi dan Komunikasi; Vol. 11 No. 2 (2020): Digital Zone: Jurnal Teknologi Informasi dan Komunikasi; 301-310
Tulisan ini membahas tentang penerapan metode pusat dan Circular Hough Transformation(CHT) untuk mendeteksi semua lingkaran yang terkandung dalam citra baik lingkaran tunggal maupun lingkaran yang tumpang tindih. Metode pusat dan CHT memainkan peran ...
PubMed
Grayscale Ultrasound Texture Features of Carotid and Brachial Arteries in People With HIV Infection Before and After Antiretroviral Therapy
J Am Heart Assoc
BACKGROUND: We aimed to investigate novel grayscale ultrasound characteristics of the carotid and brachial arteries in people with HIV infection before and after starting initial antiretroviral therapy (ART). METHODS AND RESULTS: We performed graysca...
PubMed
Determinants of peripapillary retinal nerve fiber layer’s grayscale value in normal eyes by spectral domain optical coherence tomography
Sci Rep
To determine and evaluate the distribution, variation, and determinants of peripapillary retinal nerve fiber layer (pRNFL) grayscale value with spectral-domain optical coherence tomography (SD-OCT) in normal eyes. In this cross-sectional study, three...
PubMed
Usefulness of grayscale values of hypoechoic lesions matched with target lesions observed on magnetic resonance imaging for the prediction of clinically significant prostate cancer
BMC Urol
BACKGROUND: To analyze grayscale values for hypoechoic lesions matched with target lesions evaluated using prebiopsy magnetic resonance imaging (MRI) according to the Prostate Imaging-Reporting and Data System (PI-RADS). METHODS: We collected data on...
PubMed
Voxel Design of Grayscale DLP 3D‐Printed Soft Robots
Adv Sci (Weinh)
Grayscale digital light processing (DLP) printing is a simple yet effective way to realize the variation of material properties by tuning the grayscale value. However, there is a lack of available design methods for grayscale DLP 3D‐printed structu...
PubMed
A super-grayscale and real-time computer-generated Moiré profilometry using video grating projection
Sci Rep
By using the time-division multiplexing characteristics of the projector and the integral exposure characteristics of the charge coupled device (CCD) camera, a super-grayscale and real-time computer-generated Moiré profilometry based on video gratin...
PubMed
Usefulness of grayscale values measuring hypoechoic lesions for predicting prostate cancer: An experimental pilot study
Prostate Int
BACKGROUND: To ensure reproducibility and representativeness of hypoechoic lesions in transrectal ultrasonography (TRUS), we used grayscale values and evaluated their usefulness in predicting prostate cancer (PCA). METHODS: A total of 172 patients sc...
PubMed
Perceptually Accurate Display of Two Grayscale Images as a Single Color Image
J Microsc
Life scientists often desire to display the signal from two different molecular probes as a single color image, so as to convey information about the probes relative concentrations as well as their spatial co-relationship. Traditionally, such color i...
PubMed
High-Performance Multi-Level Grayscale Conversion by Driving Waveform Optimization in Electrowetting Displays
Micromachines (Basel)
As a new type of reflective display, electrowetting display (EWD) has excellent dynamic display performance, which is based on polymer coatings. However, there are still some issues which can limit its performance, such as oil backflow and the hyster...
PubMed
Ultrasound Needle Visibility in Contrast Mode Imaging: An In Vitro and Ex Vivo Study
Ultrasound Int Open
PURPOSE: To evaluate needle visibility in ultrasound under contrast mode conditions. MATERIALS AND METHODS: Needle visibility was evaluated for bevel, EchoTip (®) and shaft of 18G Chiba biopsy needle with a 9 MHz linear probe (GE Logiq E9). Insert...
PubMed
Effect of grayscale threshold on X-ray computed tomography reconstruction of gas diffusion layers in polymer electrolyte membrane fuel cells
Heliyon
In X-ray computed tomography (CT) reconstructions of gas diffusion layers (GDLs), grayscale threshold selection is a critical issue. Although various selection methods exist, they all have their own drawbacks. This study investigates the influence of...
PubMed
A Prospective Study to Compare Superb Microvascular Imaging with Grayscale Ultrasound and Color Doppler Flow Imaging of Vascular Distribution and Morphology in Thyroid Nodules
Med Sci Monit
BACKGROUND: This study aimed to compare superb microvascular imaging (SMI) with grayscale ultrasound (US) and color Doppler flow imaging (CDFI) to evaluate vascular distribution and morphology to distinguish between benign and malignant thyroid nodul...
PubMed
Scanning technology selection impacts acceptability and usefulness of image-rich content
J Med Libr Assoc
OBJECTIVE: Clinical and research usefulness of articles can depend on image quality. This study addressed whether scans of figures in black and white (B&W), grayscale, or color, or portable document format (PDF) to tagged image file format (TIFF)...
PubMed
The assessment of diagnostic medical images using 10-bit grayscale – fact or myth?
Pol J Radiol
PURPOSE: The aim of the study was to find tests for verification of 10-bit grayscale support for radiological workstation hardware/operating system and for DICOM viewer. Also, we wanted to perform the tests on available workstations. MATERIAL AND MET...
PubMed
Driving Waveform Design of Electrophoretic Display Based on Optimized Particle Activation for a Rapid Response Speed
Micromachines (Basel)
Electrophoretic displays (EPDs) have excellent paper-like display features, but their response speed is as long as hundreds of milliseconds. This is particularly important when optimizing the driving waveform for improving the response speed. Hence, ...
PubMed
Usefulness of grayscale inverted images in addition to standard images in digital mammography
BMC Med Imaging
BACKGROUND: Mammography is essential for early diagnosis of breast cancer, which is the most common type of cancer in females that is associated with a high mortality rate. We investigated whether evaluation of the grayscale inverted images of mammog...
PubMed
Object color knowledge representation occurs in the macaque brain despite the absence of a developed language system
PLoS Biol
Animals guide their behaviors through internal representations of the world in the brain. We aimed to understand how the macaque brain stores such general world knowledge, focusing on object color knowledge. Three functional magnetic resonance imagin...
PubMed
Grayscale, subjective color Doppler, combined grayscale with subjective color Doppler in predicting thyroid carcinoma: a retrospective analysis
Braz J Otorhinolaryngol
INTRODUCTION: Fine needle aspiration cytology is preferred for thyroid nodules preoperatively, but has disadvantages of false-negative and false-positive results. OBJECTIVE: To compare the diagnostic performance of grayscale ultrasound, subjective co...