scispace - formally typeset
Search or ask a question

Answers from top 10 papers

More filters
Papers (10)Insight
Open accessProceedings ArticleDOI
10 Jun 2013
17 Citations
Assuming that closer pixels are more important, the algorithm can focus on removing distant pixels first.
By taking neighbouring pixels into consideration, extreme “noisy” pixels can be replaced.
The results of the sensitivity study suggest that this ratio method has the ability to detect clear pixels even in close proximity to clouds.
This overlap precludes the existence of a threshold that can correctly separate all clear pixels from cloudy pixels.
In comparison with previously suggested approaches, the ratio method has the capability to increase the “harvest” of clear pixels.
It is important to detect these faulty pixels prior to the use of image enhancement algorithms to avoid spreading the error to neighboring pixels.
Comparisons with other cloud masks indicate comparable performance for the determination of clear pixels.
Furthermore, the proposed method reduces the probability of detecting noise-free pixels as noisy pixels and vice versa.
First, these approaches are inappropriate for mixed pixels.
The experimental results demonstrate that this novel approaches can decompose mixed pixels more accurately regardless of how much the endmember overlaps.

See what other people are reading

What are research gap in the utilization of xband marine radar in terms of wave detection?
5 answers
The research on utilizing X-band marine radar for wave detection reveals several gaps. Firstly, the detection of rainfall interference in radar images remains a challenge due to limited accuracy in statistical methods. Secondly, the need for improved methods to retrieve wave parameters from radar images, especially in non-homogeneous sea wave fields, suggests a gap in current techniques. Additionally, controlling the quality of radar images for accurate wave parameter retrieval requires more effective rainfall detection methods. Lastly, advancements in radar maritime target detection highlight the importance of sharing radar-measured data for tackling key technologies, indicating a gap in data availability and collaboration. These gaps emphasize the need for further research to enhance the effectiveness and reliability of X-band marine radar in wave detection applications.
What are the benefits of improving signal to noise ratio (SNR)?
6 answers
Improving the signal-to-noise ratio (SNR) has a multitude of benefits across various fields, from enhancing diagnostic imaging quality to improving digital communication efficiency. In ultrasound imaging, particularly for 3D/4D data, increasing SNR can lead to better signal clarity by reducing noise, which is crucial for accurately timing tongue gestures and potentially increasing frame rates without sacrificing depth or quality. Similarly, in the realm of audio technology, enhancing SNR, especially at higher frequencies, can significantly improve audio fidelity in active loudspeakers by allowing for clearer distinction of sound components without distortion or noise interference. In medical diagnostic imaging, a higher SNR facilitates deeper penetration and clearer imaging of body targets, overcoming challenges such as attenuation and thermal noise, which are common obstacles in capturing high-quality images of deep tissue structures. The field of optical imaging also benefits from improved SNR through techniques like multiplexed illumination, which, despite empirical challenges, aims to enhance the detection of light through scattering mediums, thereby improving image quality. The advancement of terahertz imaging technology demonstrates the importance of SNR in achieving clearer, noise-reduced images through novel compressive sensing methodologies, which are crucial for applications requiring high precision and clarity. Moreover, increasing SNR in ultrasound harmonic imaging leads to deeper penetration and improved image quality, which is vital for medical diagnostics and treatment planning. In digital communication, enhancing SNR is key to reducing bit error rates, thereby improving the reliability and security of transmitted information. Furthermore, in neural networks and signal processing, optimizing SNR can amplify weak signals, enhancing the collective response of neuron arrays and improving weak signal transmission, which has implications for both neuroscience research and practical applications in signal processing. Overall, improving SNR is fundamental to advancing technology and research across a wide spectrum of applications, from medical imaging and audio processing to digital communication and neural signal processing, by enhancing clarity, reliability, and efficiency.
What is the Forward Rection Coefficient of Surface Conjugation Parameter in ISFET biosensor?
6 answers
The Forward Reaction Coefficient of Surface Conjugation Parameter in ISFET biosensors is a critical factor that influences the sensitivity and specificity of these devices towards target analytes. This parameter essentially governs the efficiency of the surface conjugation process, which is pivotal for the immobilization of biological or chemical sensing elements on the ISFET's surface. The development of an ISFET for viral molecule detection utilizes the modulation of surface potential during the interaction and immobilization of viral molecules, highlighting the importance of surface conjugation dynamics in sensor performance. The advancements in ISFET technology, including the emphasis on proton-sensitive ISFETs, underscore the necessity for precise control over surface conjugation to achieve high sensitivity and fast response times. Similarly, the creation of an ISFET device selective to anionic detergents through a PVC-sebacate membrane demonstrates the role of surface conjugation in extending the linearity range and enhancing sensor specificity. The implementation of technology computer-aided design (TCAD) simulations for ISFETs further illustrates the correlation between device dimensions and sensitivity, indirectly pointing to the influence of surface conjugation parameters on sensor performance. The novel ISFET-based biosensor for detecting explosives, utilizing Escherichia coli nitroreductase, showcases the critical role of surface conjugation strategies in achieving high specificity and sensitivity. The introduction of a SPICE-compatible ISFET model, which includes chemically influenced threshold voltage adjustments, indirectly acknowledges the importance of surface conjugation in sensor calibration and functionality. Research on ISFETs as pH sensors, and the investigation into the effects of gate insulator materials, further emphasizes the significance of surface conjugation in optimizing sensor performance and sensitivity. The exploration of ISFETs for medical applications, leveraging enzyme-promoted reactions, underscores the necessity for effective surface conjugation to facilitate these biochemical interactions. The development of a PVC-matrix membrane ISFET-based urea sensor, and the comparison with a classical immobilization procedure, highlights the impact of surface conjugation methods on sensor lifespan and sensitivity. Lastly, the parameter extraction model for ISFET devices in biological and chemical sensing, which includes the analysis of immobile/diffusive layer composition, points to the critical role of surface conjugation in understanding and optimizing sensor dynamics. In summary, while the specific Forward Reaction Coefficient of Surface Conjugation Parameter is not directly provided in the contexts, the collective research underscores its fundamental importance in determining the efficiency of biological or chemical element immobilization on ISFET sensors, which in turn significantly affects sensor sensitivity, specificity, and overall performance.
How do simulation and sensitivity analysis contribute to effective decision making in supply chain management?
5 answers
Simulation models, as discussed in various papers, play a crucial role in understanding the complexities of supply chain management. These models help in capturing the uncertainties and interactions within the supply chain network, aiding in decision-making processes. Additionally, sensitivity analysis, as highlighted in one of the papers, allows for the evaluation of optimal quantities to order and produce, thereby minimizing costs and increasing profitability in the supply chain. By combining simulation models and sensitivity analysis, supply chain managers can make informed decisions based on a comprehensive understanding of the system dynamics, leading to more effective strategies for cost reduction, improved performance, and enhanced collaboration among stakeholders.
How does multisensory perceptual decision making occur?
5 answers
Multisensory perceptual decision-making involves integrating sensory evidence from different modalities over time to form accurate judgments. Studies show that combining visual and auditory information enhances decision accuracy. Active sensing paradigms reveal that actively acquiring information from multiple senses leads to faster and more accurate decisions. EEG measurements during tasks involving visual and auditory stimuli demonstrate that neural activity peaks before responses, reflecting evidence accumulation, with enhanced activity during audiovisual trials. The process involves dynamic interactions between sensory representations, with early evidence playing a crucial role in decision-making. Ultimately, multisensory decision-making is facilitated by cross-modal interactions, dominance switching between sensory modalities over time, and synergistic neural mechanisms that enhance the integration of sensory information for optimal decision outcomes.
How does print media promotes cross-cultural understanding?
5 answers
Print media plays a crucial role in promoting cross-cultural understanding by providing accurate representations of different cultures. Through print media, individuals can gain insights into various cultural backgrounds, fostering mutual understanding. Projects like Proyek Sepaham demonstrate how print media can facilitate cross-cultural journalism education, enabling students to share stories and multimedia reports to enhance understanding between different countries. Intercultural communication via modern media platforms helps bridge cultural gaps and encourages cultural exchanges. By showcasing diverse perspectives and experiences, print media contributes to breaking down stereotypes and biases, ultimately promoting empathy and respect for different cultures, thus playing a vital role in enhancing cross-cultural understanding.
Does the illegality of mining causes government neglect?
4 answers
The illegality of mining does indeed lead to government neglect, as evidenced by various research papers. Illegal mining, such as the "galamsey" activities in Ghana, has been linked to significant challenges in sustainable development. The government's response to illegal mining is often focused on punitive measures, overlooking the underlying social injustices faced by miners. Additionally, the deplorable living conditions in mining areas highlight the need for government intervention, as seen in Ghana's establishment of the Mineral Development Fund. Addressing illegal mining requires a multidimensional approach involving collaboration across sectors and a shift towards addressing social injustices rather than solely relying on law enforcement. Therefore, the illegality of mining does contribute to government neglect, necessitating a more holistic and proactive response.
How quantum algorithm can be used to encrypt medical images in iomt environment?
4 answers
Quantum algorithms offer advanced encryption techniques for securing medical images in the Internet of Medical Things (IoMT) environment. Quantum cryptography, based on quantum mechanics principles, ensures high-level security for sensitive patient data during transmission over public networks. Techniques like Quantum Key Distribution (QKD) using protocols such as BB84 provide secure key exchange without the need for a classical channel, enhancing data confidentiality. Additionally, quantum walks combined with logistic mapping present a novel encryption method for medical images, ensuring efficient encryption of both high and low information content images. By leveraging quantum algorithms, healthcare systems can address security challenges in IoMT environments, safeguarding patient data integrity and privacy effectively.
How does the color red allura affect individuals with Attention Deficit Hyperactivity Disorder (ADHD)?
5 answers
The color red, specifically allura red, can impact individuals with ADHD in various ways. Research suggests that red color perception may be deficient in individuals with ADHD, potentially due to a hypo-dopaminergic state in the retina, affecting blue-yellow and red-green color discrimination. Additionally, a study using a virtual environment game found that blue-yellow color stimuli decreased the performance of all participants, with a more significant impact observed in ADHD participants, especially in tasks requiring attention. Furthermore, the color red has been shown to capture and hold attention in emotionally-valenced circumstances, influencing both attention and motor behavior. These findings highlight the potential influence of the color red, including allura red, on individuals with ADHD, suggesting a need for further exploration in this area.
What is the recommended size of a sentinel-2 patch for optimal image processing?
5 answers
The recommended size of a Sentinel-2 patch for optimal image processing is a 16x16 pixel window with a 5x5 pixel sampling. This size combination has been found to be appropriate for processing Sentinel-2 optical satellite observations, particularly when applied to small alpine glaciers. Additionally, utilizing a search distance adapted to the temporal baseline further enhances the processing efficiency. By applying the normalized cross-correlation (NCC) method to Sentinel-2 images, researchers have successfully derived optimal parameter values for quantifying alpine glacier ice velocity, leading to the generation of near-complete displacement maps with reduced Root Mean Square Error (RMSE) compared to in situ measurements.
How is the effectiveness of gamification compared to other marketing strategies in boosting local business revenue?
9 answers
The effectiveness of gamification in boosting local business revenue, when compared to other marketing strategies, reveals a nuanced landscape. Gamification, employing game-design elements in non-gaming contexts, has shown promising results across various domains, including local businesses. A study highlighted the significant sales increase in a shopping mall through gamification techniques like badging and leaderboarding, which promoted sales by 21.5% and 22.5% respectively, outperforming traditional couponing in the long term due to the fading influence of coupons post-treatment. However, the effectiveness of gamification can vary based on the implementation and target market. For instance, an online shop implementing gamification observed a significant increase in consumer interaction and revenue in the US, but not in Portugal, suggesting that cultural and regional differences can influence the success of gamification strategies. Moreover, gamification's role extends beyond immediate revenue generation to include cultural preservation and education, indicating its broader applicability and potential indirect benefits to local businesses by enhancing cultural value and customer engagement. The integration of gamification in marketing activities has been shown to positively impact consumer attitudes and behaviors towards brands, enhancing customer value and experience. Analyzing customer navigation patterns through gamification also offers insights into improving marketing strategies by understanding customer behaviors. Research on branded applications with gamification features identified design factors such as playability and incentive provision as drivers of consumer-brand engagement, further influencing purchase intentions and brand loyalty. However, the visual representation of gamification elements, whether stylized or in plain text, does not significantly affect user motivation, suggesting that the essence of gamification's effectiveness lies in its core mechanics rather than its aesthetic presentation. Gamification techniques focusing on accomplishment and reward have been effective in inducing consumer interest and participation, promoting consumption. Lastly, gamification's impact on work engagement and productivity in organizations suggests its broader applicability and potential indirect benefits to local business revenue through enhanced employee performance. In summary, while gamification presents a promising avenue for boosting local business revenue, its effectiveness is contingent upon thoughtful implementation, cultural considerations, and the integration of core gamification mechanics that resonate with the target audience.