fingerprint

Matlab FingerPrint Minutia Extraction

由 一世执手 提交于 2019-12-02 19:09:34
问题 I am very interested in fingerprint verification and studying minutia extraction at present. I have found the following code online and wonder if someone would be kind enough to explain it? I have looked up centroid, regionprops etc, I understand these a little but the code below has me puzzled! fun=@minutie; L = nlfilter(K,[3 3],fun); %% Termination LTerm=(L==1); imshow(LTerm) LTermLab=bwlabel(LTerm); propTerm=regionprops(LTermLab,'Centroid'); CentroidTerm=round(cat(1,propTerm(:).Centroid));

Marking termination and bifurcation finger minutiae points on an image in MATLAB

由 余生长醉 提交于 2019-12-02 17:25:06
问题 I have a project on Fingerprint Matching and I got stuck at marking the points of termination and bifurcation on the image. I have already stored pixels' coordinates. How would I go about doing this? 回答1: Assuming that your image is stored in a grayscale image called im , and your points of termination and bifurcation are stored in 2D matrices where the first column denotes the row and the second column denotes the column of each point, you can easily do this using sub2ind. sub2ind converts

How to find if user has enrolled any fingerprints

由 删除回忆录丶 提交于 2019-12-02 13:52:11
问题 I need to identify if the user has any fingerprint register on their device. However, I got an error using this line FingerprintManagerCompat fpm = (FingerprintManagerCompat)CrossCurrentActivity.Current.Activity.GetSystemService(Context.FingerprintService); ``` error `` {System.InvalidCastException: Specified cast is not valid. at app.Droid.lyA.FingerPrint.HasEnrolledFingerprints () [0x00002] in /../../../appmobile/../Droid/lyA/FingerPrint.cs:19 } This is what I need to return. 回答1: The

Handling a Biometric Fingerprint Attendance Device by using socket

由 家住魔仙堡 提交于 2019-11-30 16:04:40
问题 I am trying to connect with a Biometric Fingerprint Attendance Device using a Java program. The device I am using is a Biocom Fingerprint attendance system. However, I am search and reading about that and I see the SDK could used which based on device type (which hard, not logical, moreover, it is not global solution!) I research for a global standard on how to connect, send and retrieve data with a Fingerprint Device which again I wasn't lucky enough to find a clear solution. Currently, I

Handling a Biometric Fingerprint Attendance Device by using socket

由 萝らか妹 提交于 2019-11-30 15:43:39
I am trying to connect with a Biometric Fingerprint Attendance Device using a Java program. The device I am using is a Biocom Fingerprint attendance system. However, I am search and reading about that and I see the SDK could used which based on device type (which hard, not logical, moreover, it is not global solution!) I research for a global standard on how to connect, send and retrieve data with a Fingerprint Device which again I wasn't lucky enough to find a clear solution. Currently, I tried to connect with the device by creating a Socket object (through Ethernet port) but also not

Android Fingerprint API and Private/Public keys

由 你。 提交于 2019-11-30 11:06:22
When I enrol first and only fingerprint and generate KeyPair the PrivateKey gets invalidated when I use it for the second time. This happens only once. Am I the only one having this issue? Is there something wrong with my code? I cannot use any other key as I'm using PrivateKey to sign data. Steps: Wipe all fingerprints Enrol one fingerprint Generate KeyPair and use FingerprintManager :: authenticate During next use of FingerprintManager :: authenticate PrivateKey gets permanently invalidated. This happens only for the first time Below the code where I generate the KeyPair KeyStore keyStore =

Android M fingerprint scanner on Android Emulator

由 瘦欲@ 提交于 2019-11-30 08:16:31
I want to ask how should I test my fingerprint authentication on Android Emulator? I was trying to use adb -e emu finger touch [finger_id] referred from link here but it seems to be not working with my Emulator. My Emulator is Targeting API 23, Android 6.0, x86_64. Any help will be appreciated. Thanks You can do it from Emulator itself Go to Settings -> Security--> Set a device lock methos-->Create a pattern Then click on FingerPrint to register some fingerprints Now You can use fingerprints from emulator settings as shown in pic below Hi you have to connect to Telnet even if you're using Mac:

Fingerprint authentication for php web app [closed]

由 孤街浪徒 提交于 2019-11-30 07:42:44
I need to implement authentication in a php app but using fingerprint as part of credentials. So, sincerely I'm kind of lost here. 1) Do I need a product (reader) with javascript SDK? I've seen some using ActiveX but obviously this will work just for IE. I would like a cross-browser solution here. 2) On server side, I suppose I'll natively call some C/C++/Java libs from my php code. Is it right? As you can see, any paper/orientation you could give me would be appreciated. Jaison, "you cannot do it" and "PHP" don't belong in the same sentence. Berserkpi, you can do this in PHP, but only parts

Ways to create a unique user fingerprint in PHP

由 会有一股神秘感。 提交于 2019-11-30 06:31:15
问题 What is the best way to generate a 'fingerprint' of user unique-ness in PHP? For example: I could use a user's IP address as the 'fingerprint', however, there could be multiple other users on the same IP I could use the user's IP + user agent as the 'fingerprint', however, a single user could simply swap from safari to firefox and again be seen as being unique Ideally, the fingerprint so label the 'machine' rather than browser or 'ip' but I can't think of how this is achievable. Open to ideas

ssh: The authenticity of host 'hostname' can't be established

由 混江龙づ霸主 提交于 2019-11-30 06:08:15
问题 When i ssh to a machine, sometime i get this error warning and it prompts to say "yes" or "no". This cause some trouble when running from scripts that automatically ssh to other machines. Warning Message: The authenticity of host '<host>' can't be established. ECDSA key fingerprint is SHA256:TER0dEslggzS/BROmiE/s70WqcYy6bk52fs+MLTIptM. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'pc' (ECDSA) to the list of known hosts. Is there a way to automatically
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