BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Object recognition in an image Goto page 1, 2  Next          BorlandTalk.com Forum Index -> Delphi Graphics View previous topic :: View next topic   Author Message Andy Guest Posted: Sat Oct 29, 2005 5:09 am    Post subject: Object recognition in an image Is there a toolkit, component or code that can allow object recognition in an image, given the size, shape, color, etc. of the object? I would like to then draw polygon lines on the detected objects, much like an edge detection but specifically for the object. Thanks for any help or resource for this in advance. Andy Back to top Nils Haeck Guest Posted: Sat Oct 29, 2005 6:34 am    Post subject: Re: Object recognition in an image Hi Andy, This process consists of thresholding and segmentation. First of all, you threshold your image for the certain color you're looking for. You can do that by creating a map where all pixels with a color too much different from your target color are set to 0 and all pixels close enough set to 1. You could also use intermediate values (grayscales) to denote the closeness. Then, you segmentate your map. This process finds "blobs" that are connected areas in your map. The final step is to select the blobs that are of the right shape. The easiest of course is to analyse the blobs width/height properties (or in other words, you match the rectangles around the blobs). I have all sources for this available (I use them in multiple projects) however they are not free. If you're interested, you can contact me for pricing. Especially the segmentation class I wrote is extremely fast. Nils www.simdesign.nl "Andy" <andy (AT) nospam (DOT) com> schreef in bericht news:436303f0 (AT) newsgroups (DOT) borland.com... Quote: Is there a toolkit, component or code that can allow object recognition in an image, given the size, shape, color, etc. of the object? I would like to then draw polygon lines on the detected objects, much like an edge detection but specifically for the object. Thanks for any help or resource for this in advance. Andy Back to top Boian Mitov Guest Posted: Sat Oct 29, 2005 8:32 am    Post subject: Re: Object recognition in an image Hi Andy, Take a look at VisionLab 2.2 Beta 2 at www.mitov.com . It has new FindContour component added that may do the job. It will detect contours in the image, and will return them as list of segments. You can compare the list against a recorded shape. If the component is not sufficient, please let me know as I am working on number of new components for the next release - Face recognition, Movement direction detection, and more. I may have some pre-release stuff for you. With best regards, Boian Mitov Andy wrote: Quote: Is there a toolkit, component or code that can allow object recognition in an image, given the size, shape, color, etc. of the object? I would like to then draw polygon lines on the detected objects, much like an edge detection but specifically for the object. Thanks for any help or resource for this in advance. Andy Back to top Jens Gruschel Guest Posted: Sat Oct 29, 2005 10:09 am    Post subject: Re: Object recognition in an image Quote: Is there a toolkit, component or code that can allow object recognition in an image, given the size, shape, color, etc. of the object? I would like to then draw polygon lines on the detected objects, much like an edge detection but specifically for the object. It very much depends on what kind of object you want detect? Normally it's either done by finding edges (Sobel operator or some other edge detection algorithm), or by finding regions of similar color (use some threshold operator, maybe after analyzing the histogram if color can vary, maybe followed by dilation / erosion or other operators to close holes). Following link might be interesting, even if it isn't a Delphi product (but can be used from Delphi AFAIK): http://www.mvtec.com/ (look for HALCON) Jens -- Jens Gruschel http://www.pegtop.net Back to top jacques oberto Guest Posted: Sat Oct 29, 2005 10:58 am    Post subject: Re: Object recognition in an image "Boian Mitov" <mitov (AT) mitov (DOT) com> a écrit dans le message de news: 436333b5$1 (AT) newsgroups (DOT) borland.com... Quote: Hi Andy, Take a look at VisionLab 2.2 Beta 2 at www.mitov.com . It has new FindContour component added that may do the job. It will detect contours in the image, and will return them as list of segments. You can compare the list against a recorded shape. If the component is not sufficient, please let me know as I am working on number of new components for the next release - Face recognition, Movement direction detection, and more. I may have some pre-release stuff for you. With best regards, Boian Mitov Bioan, I tried to download VisionLab 2.1 for Delphi and C++ Builder. but it seem to contain a virus: DR/Click.Agent.FB and my antivirus program quarantined it the whole file. Jacques Back to top Boian Mitov Guest Posted: Sat Oct 29, 2005 5:15 pm    Post subject: Re: Object recognition in an image Hi Jacques, What antivirus software you use? I am using PandaSoftware, and it does not detect anything . Can it be a false alarm of some type? With best regards, Boian Mitov jacques oberto wrote: Quote: Bioan, I tried to download VisionLab 2.1 for Delphi and C++ Builder. but it seem to contain a virus: DR/Click.Agent.FB and my antivirus program quarantined it the whole file. Jacques Back to top Boian Mitov Guest Posted: Sun Oct 30, 2005 6:43 am    Post subject: Re: Object recognition in an image Hi Folks, Can anyone confirm this problem? I am unable to detect a virus so far . I have tried McCafee and Panda's ActiveScan. I also downloaded the file to make sure there is no problem on the server side, and still nothing has been detected . With best regards, Boian Mitov jacques oberto wrote: Quote: Bioan, I tried to download VisionLab 2.1 for Delphi and C++ Builder. but it seem to contain a virus: DR/Click.Agent.FB and my antivirus program quarantined it the whole file. Jacques Back to top Ronaldo Souza Guest Posted: Sun Oct 30, 2005 9:31 am    Post subject: Re: Object recognition in an image Boian, I tested the zip file with both Symantec Antivirus and McAfee VirusScan and did NOT find anything. For obvious reasons, I did not run the setup program and checked the installed files. Both AV programs are configured to test all extensions, check compressed files and use heuristics. HTH, Ronaldo Back to top Stef Guest Posted: Sun Oct 30, 2005 9:41 am    Post subject: Re: Object recognition in an image hi Boian, If I search the internet, most answers say that this message has nothing to do with a virus, but is caused by the AV program itself. My dailly updated Sophos couldn't detect this "virus". The best way to be really sure is to search for the virusname on the websites of the better AV compagnies. Another point, the download links don't work (well) in Mozilla. cheers, Stef Boian Mitov wrote: Quote: Hi Folks, Can anyone confirm this problem? I am unable to detect a virus so far . I have tried McCafee and Panda's ActiveScan. I also downloaded the file to make sure there is no problem on the server side, and still nothing has been detected . With best regards, Boian Mitov jacques oberto wrote: Bioan, I tried to download VisionLab 2.1 for Delphi and C++ Builder. but it seem to contain a virus: DR/Click.Agent.FB and my antivirus program quarantined it the whole file. Jacques Back to top Stef Guest Posted: Sun Oct 30, 2005 9:43 am    Post subject: Re: Object recognition in an image see this: http://www.chip.de/c1_forum/thread.html?bwthreadid=895448 CHIP Online - Forum Downloads - Viren @ Isobuster - 1 Back to top Nils Haeck Guest Posted: Sun Oct 30, 2005 10:31 am    Post subject: Re: Object recognition in an image Hi Boian, It's probably a "false positive", this happens with AV software regularly. What you can do is just change one or two files in your installation, recreate it, and upload it again. The accidental signature that the AV software found is then probably gone. Nils "Boian Mitov" <mitov (AT) mitov (DOT) com> schreef in bericht news:43646bb1$1 (AT) newsgroups (DOT) borland.com... Quote: Hi Folks, Can anyone confirm this problem? I am unable to detect a virus so far . I have tried McCafee and Panda's ActiveScan. I also downloaded the file to make sure there is no problem on the server side, and still nothing has been detected . With best regards, Boian Mitov jacques oberto wrote: Bioan, I tried to download VisionLab 2.1 for Delphi and C++ Builder. but it seem to contain a virus: DR/Click.Agent.FB and my antivirus program quarantined it the whole file. Jacques Back to top Anders Isaksson Guest Posted: Sun Oct 30, 2005 11:30 am    Post subject: Re: Object recognition in an image Boian Mitov wrote: Quote: Can anyone confirm this problem? I am unable to detect a virus so far . I have tried McCafee and Panda's ActiveScan. I checked it with NOD32 (signatures as of 20051028) and it reported 'No virus found' -- Anders Isaksson, Sweden BlockCAD: http://web.telia.com/~u16122508/proglego.htm Gallery: http://web.telia.com/~u16122508/gallery/index.htm Back to top Anders Isaksson Guest Posted: Sun Oct 30, 2005 11:49 am    Post subject: Re: Object recognition in an image jacques oberto wrote: Quote: I tried to download VisionLab 2.1 for Delphi and C++ Builder. but it seem to contain a virus: DR/Click.Agent.FB and my antivirus program quarantined it the whole file. I downloaded VisionLab 2.1 and checked with NOD32 Anti-virus and I didn't get any warning on it, and it seems no-one else has found anything (yet) with other antivus programs. What antivirus program are you using, and what's the date of your virus signature file? Are 'Heuristics' (or whatever it's called in your program - detection of unknown viruses) activated? As an example of 'false positives', during one day in June (11:th), McAfee flagged *any* installer made with InnoSetup as containing a virus. -- Anders Isaksson, Sweden BlockCAD: http://web.telia.com/~u16122508/proglego.htm Gallery: http://web.telia.com/~u16122508/gallery/index.htm Back to top Boian Mitov Guest Posted: Sun Oct 30, 2005 3:16 pm    Post subject: Re: Object recognition in an image Thank you Anders, Thank you! I am using InnoSetup, so it probably explains it . Shame on McAfee . Cheers, Boian Anders Isaksson wrote: Quote: I downloaded VisionLab 2.1 and checked with NOD32 Anti-virus and I didn't get any warning on it, and it seems no-one else has found anything (yet) with other antivus programs. What antivirus program are you using, and what's the date of your virus signature file? Are 'Heuristics' (or whatever it's called in your program - detection of unknown viruses) activated? As an example of 'false positives', during one day in June (11:th), McAfee flagged *any* installer made with InnoSetup as containing a virus. Back to top Boian Mitov Guest Posted: Sun Oct 30, 2005 3:17 pm    Post subject: Re: Object recognition in an image Thank you all folks, It appears to be a false alarm, but you can never be careful enough . I appreciate the alarm, as it is better to check one more time than sorry . With best regards, Boian Mitov Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi Graphics All times are GMT Goto page 1, 2  Next Page 1 of 2   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.