Brisk is a distribution of Apache Cassandra, Hadoop, Pig and Hive, enabling MapReduce jobs to be executed across a scalable, peer-to-peer storage cluster. A Cassandra-based filesystem called CassandraFS replaces HDFS (and avoids the single point of failure in HDFS, the NameNode). MapReduce jobs can work on files stored in CassandraFS, or on the fine-grained rows and columns within Cassandra.
Questions tagged [brisk]
23 questions
5
votes
1 answer
Performance issues using BRISK detector/descriptor OpenCV
I'm experiencing a performance problem when I use BRISK for feature detection and description in OpenCV.
Basically I try to match all the descriptors I get from this image:
against all the descriptors I get from a database of images using flann…
Maximus
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4
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2 answers
Cassandra Insertion Error
I have a 4 Node Cassandra cluster with 2 Cassandra nodes and 2 brisk nodes[cassandra+TT]. Brisk beta 2
I used cassandra-cli to insert create and update column families
My insertions and projections are are always getting failed. For example
Counter…
Tamil
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3
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1 answer
Cassandra File System
According to brisk implementation [ Presentation in Cassandra SF ] - Cassandra, CFS, Job/Task Tracker and Hive Metastore run in a single JVM which is totally different from Configuring an independent hadoop cluster.
Is this an advantage?
What…
Tamil
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How can I set the BRISK descriptor size in OpenCV?
BRISK's default size is 512 bits. How can I generate 1024-bit descriptors?
Part of my code:
...
// create the detector
cv::Ptr detector = new cv::BriskFeatureDetector(threshold, numOctaves);
// create the descriptor extractor -…
user3141430
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vote
2 answers
Brisk TaskTracker not starting in a multi-node Brisk setup
I have a 3 node Brisk cluster (Briskv1.0_beta2). Cassandra is working fine (all three nodes see each other and data is balanced across the ring). I started the nodes with the brisk cassandra -t command. I cannot, however, run any Hive or Pig jobs.…
Chris
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1 answer
Upgrade Cassandra Version Brisk
How can I upgrade the cassandra version and thrift version in Brisk?
Is there any tutorials kind of stuffs avalailble? I changed the build.properties file but on build, the version I mentioned couldn't be located at any repository.
Im trying to…
Tamil
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1 answer
Brisk for small files
I am a newbie to Cassandra and Hadoop. While looking for integration of the two products i came across Brisk. From the description i understand that Brisk replaces HDFS for CassandraFS. So this replacement is a solution for small file problem of…
fgakk
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Embedded Brisk? Is it possible?
I'm just getting ramped up on a new application and have decided to try out / learn Cassandra and use it for the back end.
I've got embedded Cassandra working like a charm. Now I want to add Hive on top. Has anyone attempted embedded Brisk (from…
max
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Brisk cassandra TimeUUIDType
I used brisk. The cassandra column family automatically maps to Hive tables.
However, if data type is timeuuid in column family, it is unreadable in Hive tables.
For example, I used following command to create an external table in hive to map column…
chnet
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Assertion failed while drawing match Key Points BF BRISK+FREAK
I am trying to stitch two images using BRISK+FREAK
Here's the code, When I try to draw the matches I get an error
error: OpenCV(4.1.2) /io/opencv/modules/features2d/src/draw.cpp:225: error: (-215:Assertion failed) i1 >= 0 && i1 <…
Santhosh Dhaipule Chandrakanth
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1
vote
1 answer
Saving KeyPoint as String and converting back to KeyPoint
I would like to cache KeyPoint in a JSON file and then retrieve them later for use in a FlannBasedMatcher. Is there a way to convert the KeyPoint to something like an array of strings or floats that could be stored and then retreived from a JSON…
Anters Bear
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Using featuredescriptors like ORB, Fast, Brsik with OpenCv 3.2
I´m quite new to OpenCV. I followed this tutorial for searching an object in a picture and I was able to run the code successfully.
While I was searching, I saw that there are more options for feature matching (e.g Fast, ORB or BRISK). So I decided…
Drian
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0 answers
How to create BRISK Feature Detection with Parameters on OpenCv Java 2.4.9
I know there is constructor for BRISK in OpenCv C++ so that one can set up threshold,octave values but I can't find a similar thing on OpenCv Java. I know there is create() method to create BRISK but cannot set up values such as threshold and…
mualloc
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2 answers
Crashing detect function in opencv(ORB and BRISK)
I'm trying to get the keypoints in a image using the detector ORB but always gets an exception and crash, my code is the next one.
vector < KeyPoint > kp;
int nfeatures = 500;
float scaleFactor = 1.2f;
int nlevels = 8;
int edgeThreshold = 15;
int…
Jalg
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Taking so much time to fetch Keypoints and Descriptors of OpenCV
I used OpenCV Surf method to fetch the keypoints and descriptors , it is working fine but taking so much time .
My code is : -
NSLog(@"Keypoint Detects");
//-- Step 1: Detect the keypoints using SURF Detector
int minHessian =…
Atul Prakash
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