Touch-surface multi-stroke gestures, as well as freehand drawings, are typically acquired by devices and
sensors as a suite of timestamped points on a plane. This Cartesian coordinate system, although useful for
computation like complexity analysis, gesture classification and recognition, becomes complex and inefficient
when gestures need to be visualized and directly manipulated for editing. To address these challenges, a
new mathematical representation of these gestures via a Bézier curve is defined to initiate a model-based
approach for gesture direct manipulation (e.g., cut, copy, paste, translate, scale, rotate, deform, crop, compose,
decompose). SketchADoodle, an Android-based mobile application for drawing, gesturing, demonstrates
how the pseudo-code of the Bézier-based operations are engineered for real-time direct manipulation.
It contains notes, examples, and exercises on multi-view drawing so fresh students can simply understand from this document. this document also briefly identifies the difference between first angle projection and third angle projection including examples.
Using a Mobile Phone as a 2D Virtual Tracing Tool: Static Peephole vs. Magic ...Klen Čopič Pucihar
Traditional sketching aids rely on the physical production of templates or stencils which is particularly problematic in the case of larger formats. One possible solution is 2D virtual tracing using a virtual template to create a physical sketch. This paper evaluates a mobile phone as a 2D virtual tracing tool by comparing three tracing methods: (i) a traditional tracing method with a printed template, (ii) a virtual tracing method Static Peephole (SP) in which the virtual template is manually adjusted to a physical contour by drag and pinch gestures, and (iii) a virtual tracing method augmented reality Magic Lens (ML) in which template is projected on the physical object such as paper hence navigation is possible through physical movement of the mobile device. The results show that it is possible to use mobile phones for virtual tracing, however, ML only achieved comparable performance to SP mode and traditional methods continued to be quicker and preferred by users.
Paper: http://link.springer.com/chapter/10.1007%2F978-3-319-44805-3_22
It contains notes, examples, and exercises on multi-view drawing so fresh students can simply understand from this document. this document also briefly identifies the difference between first angle projection and third angle projection including examples.
Using a Mobile Phone as a 2D Virtual Tracing Tool: Static Peephole vs. Magic ...Klen Čopič Pucihar
Traditional sketching aids rely on the physical production of templates or stencils which is particularly problematic in the case of larger formats. One possible solution is 2D virtual tracing using a virtual template to create a physical sketch. This paper evaluates a mobile phone as a 2D virtual tracing tool by comparing three tracing methods: (i) a traditional tracing method with a printed template, (ii) a virtual tracing method Static Peephole (SP) in which the virtual template is manually adjusted to a physical contour by drag and pinch gestures, and (iii) a virtual tracing method augmented reality Magic Lens (ML) in which template is projected on the physical object such as paper hence navigation is possible through physical movement of the mobile device. The results show that it is possible to use mobile phones for virtual tracing, however, ML only achieved comparable performance to SP mode and traditional methods continued to be quicker and preferred by users.
Paper: http://link.springer.com/chapter/10.1007%2F978-3-319-44805-3_22
Using this example code in Xcode, please help with this project wher.pdfamirthagiftsmadurai
Using this example code in Xcode, please help with this project where you need to build a simple
but intuitive tool to draw curves on an image, for a painting tool, which is a core function of
many graphics/image designing tools, such as Coreldraw, Photoshop. You are required to draw
curves by using the Bezier Spline rule. Your software allows users to draw as many splines as
needed. Every spline is created by four points via left mouse click. The 1st and 4th points are the
fixed points that the curve passes through. The 2nd and 3rd points are considered as the
controlling points that determine the tangent direction at point 1 and 4. So your mouse can drag
these two points to different positions to modify the shape of the curve. There are 7 requirements
for this project:
1.) Correct Bezier spline drawing
Draw the curve based on users 4 points input.
Use Bezier matrix to multiple the 4 points to obtain the correct coefficients (ax,
bx, cx, dx; ay, by, cy, dy).
Correctly plot the curves based on the coefficients.
As long as one Bezier spline is drawn correctly, you will get the credits.
(2) Bezier controlling point editing to change the shape (20%)
User can drag the controlling points freely to change the point position.
The two corresponding straight lines change dynamically according to the new
positions of the controlling points.
The curve splines shape changes dynamically according to the new positions of
the controlling points.
Again, as long as you can have the controlling points of one Bezier spline work,
you will get the credits.
(3) Multiple spline drawing
Your code allows user to draw as many splines as needed and able to edit any of them.
User can also right-click mouse button to remove spline point and thus remove the corresponding
spline.
(4) Correct spline highlight
Draw a little square around the center of each spline in grey color, e.g. (200, 200, 200). You can
make this square size 30x30 pixels
When the mouse moves into the spline editing region, this region should turn to green (0, 200,
0).
When the mouse moves out of the region, the square should turn back to grey.
(5) Translation operation
Successfully move the spline to any position by mouse dragging
(6) Coloring operation
Successfully change the spline to any color when a spline is highlighted
(7) Thickness operation
Successfully adjust the spline with any thickness
I attached the sample code that these 7 requirements should be added onto. Please help asap!
Thanks!.
Sketching Tips From A CAPINC SOLIDWORKS GureCAPINC
A rerun of a live presentation at SOLIDWORKS World 2016, this slide set includes sketching tips and tricks that SOLIDWORKS gurus use to speed up the sketching process and accuracy. The slides cover sketching tools and wizards as well as unique workarounds to help you overcome sketching challenges.
For more technical tips and live webinars visit http://www.capinc.com
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
TECHNICAL TRAINING MANUAL GENERAL FAMILIARIZATION COURSEDuvanRamosGarzon1
AIRCRAFT GENERAL
The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
2. What is this about ?
How can one create a drawing application for mobile devices...
• ... that is intuitive to use ...
• ... and works well despite the fat fingers problem ?
3. Drawing applications in
general
Typical solutions for drawing applications are either:
Bitmap based, i.e. the application manipulates a matrix of
pixels, à la Photoshop.
• There exists many smartphone bitmap drawing
applications.
• However, there is no notion of shapes in the drawing,
juste pixels.
• If you draw a face, you cannot move, rotate or scale
it afterwards.
• Not in a straigthforward way with no visual
artifacts.
• Multi-touch interfaces naturally invite for these
sort of interactions.
4. Drawing application in
general
Typical solutions for drawing applications are either:
Vector based, ie the application manipulates mathematical
objects representing shapes, à la Corel Draw.
• There exists some smartphone vector drawing
applications:
• Some are artists oriented and their interaction is
very close to bitmap based drawing applications.
• Some are technical oriented and use a select first-
manipulate after approach.
• This approach works well using a mouse, but
are not very pratical on smartphones due to
the fat finger problem.
5. What do we propose ?
Let's create a new type of interaction for drawing...
• ...that is based on an experience shared by most in the real world:
How do young children use their school materials to create drawings ?
6. Drawing metaphor
Real world manipulation Application manipulation
Pen drawing Freehand drawing an a surface
Area coloring Bucket fill enclosed areas
Scissor cuts Cut drawings according to a line
Glue parts together Glue drawings that intersects a line
Rotate and move parts Idem, add scaling because we can
easily achieve it on a computer.
7. How can we achieve it ?
• The scaling/rotating/moving impose a vector-based approach.
• The direct manipulation metaphor forbids the select then modify
approach typical to vector-based.
• The bucket fill can be achieved by using the flood fill algorithm, but this
is a bitmap-based algorithm.
Our solution:
• Everything in the drawing is a quadratic B-Spline.
• All tools use a direct manipulation approach.
• Requires adaptation of existing algorithms and creations of new
ones.
• The direct manipulation is as close as possible to the real world
manipulation.
8. Quadratic B-Splines
• A Bézier curve of degree n is defined by n+1 control points.
• A quadratic Bézier curve is defined by 3 points defining two segments.
• For t ∈ [0,1], take each corresponding point on each segment.
• Recursively, take the corresponding point on the segment defined
by the two points above. This point is the t point on the Bézier
curve.
• A B-Spline is a succession of quadratic Bézier curves where the end
point of a curve is the starting point of the next one.
9. Tool: freehand drawing
• A sampling of points is generated by the movement of the finger.
• A quadratic B-Spline is created on the fly by curve fitting these points.
• For efficiency, we use a streaming approach:
• As new points are coming in, we fit these points to a quadratic
Bézier curve.
• A distance function decides if the curve is a good enough
approximation to the sampled points.
• If not, the last good quadratic curve is added to the B-Spline and the
corresponding points are removed from the sampling.
10. Tool: move/rotate/scale
• By placing a single finger on an item, displacing the finger moves the
item along with it.
• By placing two fingers on an item, moving the fingers ensures the item
follow the same displacement, rotation, and scaling.
By moving two
fingers from A,B
to C,D, the shape
is moved, rotated,
and scaled.
11. Tool: cut
• By drawing a straight line, a cut is decided by the user.
• This line is intersected with all splines in the drawing.
• When an intersection is met, we use De Casteljau's algorithm to
split the Bézier curve in two, which allows to cut the B-Spline in two.
12. Tool: glue
• By drawing a straight line, a glue is decided by the user.
• This line is intersected with all splines in the drawing.
• A composite is created that contains all the intersected B-Splines.
• From now on, all move/scale/rotate/transformations applied on the
composite are applied on all B-Splines of the composite
13. Tool: bucket tool
• By touching a pixel, the enclosed area is painted by the current color.
• Further, the neighbooring B-Splines that define this area are also glued
together.
• We achieve this effect by:
1. Using the floodfill algorithm on a bitmap representation of the current drawing.
2. Identifying all B-Splines that delimit the flooded area.
3. Walking around these B-Splines, identifying when a jump occurs between them.
4. Stitching together a new B-Spline from this information.
5. Finally, gluing everything together.
14. Implementation:
SketchADoodle
This Android application is available on the Play Store:
https://play.google.com/store/apps/details?id=com.grayswindle.sketchadoodle
The algorithms described in the paper are available for JavaScript:
https://github.com/GrolauxDonatien/SketchADoodleJS
16. Conclusion
• By mimicking a real world experience, we created a new type of direct
manipulation for drawing on a smartphone.
• The user study shows a global positive view for the application.
• The specifics for the algorithms are described in the paper.
Thank you for your attention.
Editor's Notes
To validate this work, we have performed an IBM CSUQ form with 26 participants (11 females, 15 males), aged between 19 and 66 years. We have begun with a set of demographic question like gender, computer habits and so on. Then, we have evaluated the application with the Computer Satisfaction Usability Questionnaire that enables participants to express their level of satisfaction with the usability domain. This 16 questions questionnaire has been empirically validated with a large number of participants on 4 categories: system usefulness, quality of the information , quality of the interaction, and system quality.
As we can see in the result of Usability evaluation, all categories are almost higher than 5, which is generally considered acceptable for a 7-point Likert scale in this case. The weak score is about the quality of the information. Indeed, for the error management, some users found it difficult to correct their errors because they could not find the correct information. Overall, participants did appreciate the ease of use and quality of the interaction they had. All values are beyond the threshold of 4 which represents a good score.
