Last seen: Jun 21, 2014 12:42 PM EDT
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Duzy Chan

I do as you need with my best.

Username: duzy

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Location: Shenzhen, China

Member since: July 2012



(37 reviews)

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3 users have recommended this freelancer.

  • [Sealed]
    Profile image for Seller jonoomph


    23 days ago

    Excellent coder with a ton of experience, but was unable to finish the entire project. I wish him the best though!

    Project Description:I am looking for an expert on C++, image manipulation, and audio processing to help me improve an existing C++ video editing library. This is a cross-platform C++ application, built with CMake, GCC/MinGW, Qt5, JUCE, and ImageMagick++, and must continue to work on Windows, Mac, and Linux...
  • $45.00 USD
    Profile image for Seller uktechpeople


    Feb 23, 2014

    excellent - skilled

    Project Description:talk to me about if how you can do a project, which would be a business proposition
  • $55.00 USD
    Profile image for Seller reliableprovider


    Feb 8, 2014

    Great Provider ! Fast and reliable . I Will definitely work hire them again

    Project Description:Hi - I wanna add some feature to my existing Googleapp spreadsheet script. I have both scripts available at my end and will be combined with little modification. I 'll look forward hearing from you...
  • €222.00 EUR
    Profile image for Seller dylancoakley


    Jan 24, 2014

    Great developer and was willing to wait to help with any issues afterwards, would be highly recommended!

    Project Description:Looking for help on the next release of my image editor, since I don't have much time to do so. Attached is the source code folder and instruction sheet (read to get idea of what is involved). I would...
  • $150.00 USD
    Profile image for Seller putester


    Jan 24, 2014

    Code was okay.

    Project Description:N/A
  • $166.00 USD
    Profile image for Seller superedits


    Jan 15, 2014

    Excellent work , top coder. Had submitted work well before deadline.

    Project Description:[This is a Private Project. You must be logged in to view the Project Description]
  • $310.00 AUD
    Profile image for Seller yangang112


    Nov 30, 2013

    Great freelancer!

    Project Description:details please see attached files, Thank you! The development of Linux is one of the most prominent examples of free and open source software collaboration: the underlying source code may be used, modified,...
  • $105.00 USD
    Profile image for Seller Darkfields


    Nov 15, 2013

    Excellent work as always.

    Project Description:Help with C programming questions.
  • $300.00 USD
    Profile image for Seller Darkfields


    Nov 7, 2013

    Excellent code, will use again in the future :)<br/>Excellent code, will use again in the future :)

    Project Description:Require my partially done program completed within 6 hours (should take less than 2 hours) basically its a file stored in a link list that needs to be edited or new items added through a simple gtk gui...
  • $750.00 USD
    Profile image for Seller KristijanV


    Nov 3, 2013

    job was done as it was expected

    Project Description:one week (five days) csipsimple coding
    Duzy Chan has not completed any projects.
  • [Sealed] In Progress

    Am looking for somebody who is able to setup a 100% safe crypto currency based on the open source of bitcoin and quarkcoin.Longterm work as there will be improvements all the time.Please bid your price for setting up such a crypto currency

  • $5000 USD In Progress

  • $1166 USD/hr Apr 9, 2014

    i want to have my own coin made as a fun thing to do and put it into the blockchain like bitcoin or litecoin dogecoin coinye coin etc can you do this for me and what do you need from me to host the coin i have a website to host the coin already but have no coin canyou help me also the coin and coding should come with the qt wallets for my people to download the wllet to save coins

  • $500 USD Apr 1, 2014

    Hi there.I need Private Crypter. ( Stub is C++ or ASM , Builder is VB6 )It MUST run all Unicode Environ and all version windows ( xp, vista, win7, wiin8, even more ... )And without any dependencies (.NET Framework, java, etc) and need works extremely well and stable.Also can crypt all kind of file.And MUST Long time FUD ( Scantime + Runtime )I need some feature.Auto EOF supportProcess Persistance Project InjectionAlso tell me how make stub FUD / UD.I need who was done something like this in past and know exactly what is this

  • $750 USD Mar 31, 2014

    Project Description: Hi there.I need Private Crypter. ( Stub is C++ or ASM , Builder is VB6 )It MUST run all Unicode Environ and all version windows ( xp, vista, win7, wiin8, even more ... )And without any dependencies (.NET Framework, java, etc) and need works extremely well and stable.Also can crypt all kind of file.And MUST Long time FUD ( Scantime + Runtime )

  • $50 CAD Feb 11, 2014

    Hello, I have a C project to finish for today, I have already done much and I&quot;m looking for someone to finish methe project is a grid of character, and we must search for a word in the grid and display its position and direction to find the complete word.Thank you

  • $5555 USD Feb 5, 2014

    Main Requirements :Display PDF filesPrint PDF filesConvert text and image files (gif, png, jpg, tiff) to PDF on the flyFill and save interactive PDF formsMarkup PDFs (all PDF annotations and text markups supported)Digitally sign PDF filesContent editingRedactionAccess jPDFProcess powerful PDF manipulation APIText search, selection, copyEasy navigation with thumbnail, bookmark, annotation, signature viewsAdvanced tools: zoom, loupe, snapshot, pan and zoomSupport for PDF 1.7 file format (latest PDF format) including layersSupport for all image types: PNG, TIFF, JPEG, JBIG2 and JPEG 2000Customizable toolbar and user interfaceSupport for all font types, all color spacesCreate new PDF documents or work with existing PDF documentsAdd content onto existing or new pagesAssemble documents, split, merge, combine documents, remove pagesEncrypt documents using RC4 or AES encryption, set document permissionsDigitally sign PDF documentsImport, export and fill interactive form dataConvert documents to TIFF, JPEG, PNG imagesApply and verify digital signaturesExtract text contentPrint PDF documentsAdd file attachmentsAdd and edit bookmarksPreflight documents using PDF/X-1 and PDF/X-3 profilesEdit document properties such as title, keywords, subjectCreate PDF layers and draw onto themLinearize PDF documents for fast web viewingSplit PDF documentsMerge PDF documentsCreate and edit bookmarks / outlinesUpdate document meta-data informationSave to the local file system or to Java output streamsLoad PDF documents from files, network drives, URLs or input streams.Work with PDF forms in both AcroForm or XFA formats.Export fields data as FDF, XML (XFDF) or XDP files.Import fields data from FDF, XML (XFDF) or XDP files.Flatten form fields (paint the fields content directly in the page and remove fields themselves from the PDF document).Reset fields to their default value.Support for barcode fields.Save updated PDF file as file, an OutputStream or a ServletOutputStream.Export PDF document pages as JPEG, TIFF or PNG images.Import images into new or existing documents.Support for PDF 1.7 (latest PDF format).Save to the file system or to Java output streams.Digitally Sign PDF Documents:Create New Digital Signature FieldsApply Digital Signatures on New or Existing FieldsApply Certifying SignaturesClear Digital SignaturesEncrypt / Decrypt PDF Documents with 40, 128, 256-bit Encryption (including latest algorithm)Decrypt PDF DocumentsSupport for Timestamp ServersSet / Remove Permissions: Print, Print High Resolution, Copy or Extract Content, Extract Content in Support of Accessibility, Modify the Document, Add / Modify Annotations, Fill Form Fields and SignSet / Remove Passwords: Open Password, Master Permissions PasswordLoad PDF documents from files, network drives, URLs or input streamsExtract text in the logical reading orderExtract words as a vector of StringsSupport for all image types, including JBIG2 and JPEG 2000Support for all PDF font types (Types 0-3, OpenType, TrueType)Support for the latest Acrobat PDF format 1.7 including layersSupport for all PDF colors spaces including pattern and separationSupport for file attachmentsEmulates the java graphics and printing classes, thus minimizing code changes and training.Allows runtime decision to go to a printer or to a PDF file.Supports PDF compression for smaller document size.Support for PDF encryption and permissions.Support for embedding fonts.Convert Word 97-2003 (.doc) documents to PDFConvert Word 2007-10 (.docx) documents to PDFMerge multiple Word files into a single PDF documentConvert Word files to JPEG, TIFF or PNG images

  • $2500 USD Jan 11, 2014

    developing an api to bidirectionally call java programs from a c application

  • $309 USD Dec 18, 2013

    Create script to parse input CSV file of fully qualified domain names using information from configuration file. Reject values that are obviously not a domain name (no “.”, spaces other than leading/trailing for example). The input file will have from 25,000 to 150,000 entries. Submit each value as an HTTP query to The parsed value in this example is Example of submitting parsed value for response is curl --cert certificatekeys.pem:certpassword --cert-type pem The program should keep track of domains that have been submitted so the same domain is not submitted twice. For example, and would be the same domain. The query will submit an HTTPS request over SSL that requires client side authentication. Data via JSON will be returned. Need to parse out value pairs for “label”, “confidence”, and “score”. The original value of the URL should be retained – in some cases the lookup value and original may be the same. Write results to text file. The initial program should be a script that can be easily run on Windows or Linux. Something that can be easily compiled would be good as well.Program should be started with a configuration file each time.

  • £50 GBP Dec 5, 2013

    I want to explain to my a piece of code what does it do..especially i want a word file to describe all the thing that the code do..i am not no idea how to program so if you so simple to explain to me how all these things work.Explain every functions. I want only explain..if the code is wrong it does&quot;t matter.

  • £233 GBP Dec 1, 2013

    Need a C++ programmer to write a basic program, nothing to high level. Please read attached files for details and please ensure you follow the instructions provided.

  • $150 USD Nov 15, 2013

    wav to ASCII,麻烦加qq2260295006

  • $4226 USD Oct 29, 2013

    The project we want to implement is to decode JPEG2000 using NVIDIA GPU.In this project there is a hardware JPEG2000 encoder which sends UDP data of every frame via network on the other side there is a computer which will receive that data assemble each and every frame, decode the frame and present the video on the screen connected to decoding computer.Any additional needed information will be supply including decoder example based on CPU calculations.

  • $4226 USD Oct 19, 2013

    The project we want to implement is to decode JPEG2000 using NVIDIA GPU.In this project there is a hardware JPEG2000 encoder which sends UDP data of every frame via network on the other side there is a computer which will receive that data assemble each and every frame, decode the frame and present the video on the screen connected to decoding computer.Any additional needed information will be supply including decoder example based on CPU calculations.

  • $20618 USD Oct 13, 2013

    Hello ,I need a game design for android/iphone game. It includes a design for main menu, level selection menu and about 40 game levels. physics and graphics should be similar to hardest game ever 2 or even better :).I&quot;ll provide u with information about graphic ideas and level physics for each level.

  • $28 USD Oct 12, 2013

    Hello,I want to get my database assignment done in next 8 hours. It requires ERD to relational schema conversion and writing some simple iSQL query statements.I want this finished within next 8 hours.***BID ONLY IF YOU CAN MEET HE DEADLINE***40% of the assignment is already done!Budget: $25 MAX.

  • $515 USD Oct 8, 2013

    I need an android developer who can customize an android rating bar( designed as per the mock-up (See attachment). There is 1 rule.1. The drawable used CANNOT be a regular image. It must either be an extension of the shape drawable class or a shape defined via xml. YOU WILL NOT BE REWARDED IF YOU USE A REGULAR IMAGE (I could have done this myself). You can also extend the RatingBar class if necessary to achieve the effect.Due to the nature of the project I want to be able to customize the rating bar on the fly so I cannot have hundreds of drawables packed with the project. If you can video of the view in action it would be greatly appreciated and will probably win you the project. Type &quot;I understand and I can complete this project.&quot; in your bid so I know your not a bot. Happy bidding.

  • $25 USD Sep 23, 2013

    Android application VoIP(SIP) module in Anndroid , Convert SIP to Mobile Call (WCDMA, LTE ..)SIP ==&gt; Android base Mobile Call outAndroid Mobile Call in ==&gt; SIP

  • $6701 USD Aug 2, 2013

    I&quot;m looking for this program.Please contact me if you have not wait only those who are in the hands of

  • $773 USD Aug 2, 2013

    Hello, I need a developer to work on my 2014 diary, I have files on pdf already designed for print version, just need an app developer to covert it into an online application that can be used on phones, ipad etc, I have the diary printed for 2013, but will like it turn it into an app for 2014. I have all diary files on pdf designed and ready to go. Please bid only if you have experiece for this kind of job, and can show example of apps done. Job is very urgent, will need someone to start straightaway.Many thanks

  • $50 USD/hr Jun 29, 2013

    to understand this project ... check this project check need an algorythm in PHP or PERL which analyse a picture, to find iris and then SHARE AREA to report about it significative color distinctioni this project, i just need to d&eacute;tect ACTIVE ZONE (comparing average color of other part of iris)in apllpication there 5 part : 1- capture picture = not in this poject2 - Scan and detect area which perhaps health trouble 3- send the code(s) about this area... in a BD4. create a report in a list of possilbe report = not in this poject5. send report = not in this pojectsee this picture to understand beter area seems not so hard to analyse as it&quot;s Circle sector, mathematic and &quot;level&quot; of color in pictures files will solve it.Thanks for you bids

  • $50 USD Jun 28, 2013

    Im also in SL. Can you give me ur email ID or phone number for direct contact? Price can be discussedIt is a small assignment. need urgent! Everything will be checked with plagiarism detection tool. So please put a reference. (no problem if it is coppied, but must acknowledge)Practical Part 1 - C++ Data Structures and Algorithms //You are working as a high-paid optimizer in a respectable game company. Your team leader has stopped by at your office 8:00 AM and given you a task: given code needs to be optimized by tomorrow. Yikes! You see a letter and source code on your desk. &quot;Good day, I now you are capable for performing this sort of feat, so can make a safe bet you don&quot;t fail me. This code is an essential part of you-know-what-game that will break sales records from here to Hong Kong. However, current implementation is dead slow for some reason - I need you to explain to me what it does and why it is so slow. I&quot;ve always felt that a picture tells more than thousand words, so illustrate its operation to me using one. I am not a computer-literate guy, so make it easy to understand. And while you&rsquo;re at it, be a good chap and optimize it. And write those time complexitity-whatcha-call-them, too - guys as the lab want them for some reason.Regards,Your Chief Executive Officer.&quot;//In other words:1.Explain code operation in words (English).2.List drawbacks of used algorithm/data structures.3.Draw a picture of the algorithm operation (before optimization) so that your computer-illiterate team leader can figure out what makes it so slow.4.Replace used data structures with more efficient (and readable) solutions and give reasoning for your choice. Ie. how this is beneficial, why not some other data structure.5.Optimize CRenderQueue class member functions code via more efficient algorithm (no assembly language required).6.Analyze and provide reasoning for time complexityoBefore optimizationoAfter optimizationSubmit modified source code + pictures as your answer in a zip file. Note: Everything will be checked with plagiarism detection tool. Acknowledge with reference if you taken from the internet or other resources. Otherwise you will be graded as 0 and failed. Must be submitted within 48 hoursshenthuran88 at g m a i l dot com

    Duzy Chan does not have any open projects.
    Duzy Chan does not have any work in progress.
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Android, frameworks/driver

Jul 2011 - Mar 2012 (8 months)

*) Make modification to the Android source code(based on Telechip's source tree) to make the Android based product support the company's HID remote control devices<br />*) Design Java interfaces to allow Android app developers to write apps for accessing the remote control devices<br />*) Make similar support for Ubuntu desktop Linux(this is not the major task)<br />*) Related Skills: Android/C++/Java/kernel config/Android Build System/Bash/Ubuntu<br /><br />

Android, Java/C++/JavaScript/MIPS Assembly

Nov 2009 - Dec 2011 (2 years)

*) Using Ubuntu desktop Linux for workspace<br />*) Hacked the Android build system, managed to do Android app development<br />*) Hacked the Android frameworks source(JNI glue, and C++ native code)<br />*) Hacked the Android native phone Launcher, redesigned and implemented the Launcher for TV(totally rewrote of the original phone launcher, integrated with TV functions)<br />*) Designed and implemented TV specific Android app store client.<br />*) Hacked WebKit and Android WebView, pre-research a WebKit based app platform(for

Embedded Linux C++ (Qt)

Jun 2008 - Mar 2009 (9 months)

*) Based on Qt4 designed and implemented the main software for the company's digital photo frame<br />*) Designed the plugin mechanism for dynamically pluggable photo representation effects.<br />

Embedded Linux C++ (Qt)

Apr 2006 - Dec 2007 (1 year)

*) Debian desktop Linux as workspace<br />*) Modify and customize Qt Widget library<br />*) Optimize/Refine QPixmap by using Linux Posix IPC API(shared memory)<br />*) Qt based file browser for smart phone<br />*) GCC/GDB/Emacs/Bash/Perl/Qt/Gnome Terminal<br /><br />Note: the company went bankruptcy.

Embedded Linux C++

May 2005 - Mar 2006 (10 months)

*) Red Hat Linux as workspace<br />*) Do apps based on FLTK.<br />*) Modify FLTK(based on Nano-X(microwindow)) on it's widgets.<br />*) GCC/GDB/Emacs/Bash/Gnome Terminal<br /><br />



Guangzhou University



Qualification Certificate of Computer and Software Technology Proficiency

South China Institute of Software Engineering, GZU

It's a national certificate.