Four Projections CMOS Linear Image Sensor Tomographic Image Reconstruction

Abstract

This study focused on developing software for image reconstruction system of optical image data obtained from four projections of CMOS linear image sensors by using MATLAB. Four projections of collimated light beams at least must be used in order to avoid aliasing and smear effect that may be appeared on the reconstructed image obtained. The image reconstruction is based on linear back-projection method where transpose matrix, and pseudo-inverse matrix are used to solve inverse matrix problems in MATLAB. Results were compared between both inverse problem calculation methods selected. It was discovered that transpose matrix method performs better than pseudo–inverse matrix for a high resolution images. A graphical user interface has been implemented, it is capable to reconstruct image from raw data collected from sensor. Reconstruction results demonstrated in most cases are able to produce an adequate image for further analysis by user.

A theoretical mapping of green roofs on building for sustainable constructions

“…Improving air quality on green roofs involves the absorption of chemical pollutants, leading to a decrease in sulfur dioxide (SO2), ammonia (NH3), nitrogen dioxide (NO2), ozone (O3), and carbon monoxide (CO) levels [20]. Green roofs reduce temperature, pH, sulfate, and ammonia, enhancing air quality [21].…”

Recent Progress in Synthesis, POM Analyses and SAR of Coumarin-Hybrids as Potential Anti-HIV Agents—A Mini Review

“…Natural coumarins (Figure 1) are classified into several types depending on their chemical diversity and complexity: simple coumarins (1), furanocoumarins (2), pyranocoumarins (3), biscoumarins (4), and additional coumarins such as phenylcoumarins (5) [22][23][24]. Coumarins 1 (2H-chromen-2-one or 2H-1-benzopyran-2-one), secondary metabolites that belong to the family of benzopyrones, are found in a variety of plant parts, such as roots, seeds, nuts, flowers, and fruit [25,26].…”

“…Pharmaceuticals 2023, 16, x FOR PEER REVIEW 3 of 32 additional coumarins such as phenylcoumarins (5) [22][23][24]. Coumarins 1 (2H-chromen-2one or 2H-1-benzopyran-2-one), secondary metabolites that belong to the family of benzopyrones, are found in a variety of plant parts, such as roots, seeds, nuts, flowers, and fruit [25,26]. It has been established that compounds possessing a coumarin moiety have exhibited a variety of intriguing and exciting activities due to their varying pharmacological properties, such as anti-bacterial activity [4,24,25], anti-cancer [4,25,26], anti-coagulant [4,27], anti-oxidant [28], anti-fungal [4,[29][30][31], anti-tubercular [4,32,33] and most importantly for this research, anti-viral and anti-HIV activity [4,34,35].…”

“…Depending on the quantity of bromosuccinimide used, small amounts of 3-or 6-dibromoethyl compounds were also formed. By employing sodium acetate, the bromomethyl-DCK derivatives (6a, 7a and 8a) were reacted with acetic anhydride to generate the corresponding It has been established that compounds possessing a coumarin moiety have exhibited a variety of intriguing and exciting activities due to their varying pharmacological properties, such as anti-bacterial activity [4,24,25], anti-cancer [4,25,26], anti-coagulant [4,27], antioxidant [28], anti-fungal [4,[29][30][31], anti-tubercular [4,32,33] and most importantly for this research, anti-viral and anti-HIV activity [4,34,35].…”

Comparison analysis of different classification methods of power quality disturbances

“…In a study conducted in 2013, four classifiers namely SVM, probabilistic neural network (PNN), radial basis function (RBF) and multi-layer perceptron (MLP) were compared and it is proven that SVM is superior to other methods with the accuracy of 99.06% [24]. In addition, in a study conducted in 2013, by also implementing an SVM classifier with the integration of Gaussian kernel, authors obtained an accuracy of 94% [8].…”