computer vision – Brian Roy

Analysis, Big Data, Data Architecture, IoT, Neo4j, Tech

Person Recognition in Images with OpenCV & Neo4j

Time for an update on my ongoing person identification in images project; for all the background you can check out these previous posts:

Analyzing AWS Rekognition Accuracy with Neo4j

AWS Rekognition Graph Analysis – Person Label Accuracy

Person Recognition: OpenCV vs. AWS Rekognition

In my earlier serverless series I discussed and provided code for getting images into S3 and processed by AWS Rekognition – including storing the Rekognition label data in DynamoDB.

This post builds on all of those concepts.

In short – I’ve been collecting comparative data on person recognition using AWS Rekognition and OpenCV and storing that data in Neo4j for analysis.

Continue reading “Person Recognition in Images with OpenCV & Neo4j” →

Analysis, Tech

Person Recognition: OpenCV vs. AWS Rekognition

If you’ve been following along – I’ve been working with AWS Rekognition to detect people in security camera footage.

I have previous posts that discuss the results.

I’m now running the images through OpenCV using the pre-trained HOG + Linear SVM model. The picture in this post is an example of the output from OpenCV with a person detected and a bounding box drawn.

Over the next day or two I’ll start processing all the images with both Rekognition and OpenCV. I’ll also be capturing the results in Neo4j (where I’m already capturing the Rekognition object labels) to allow for comparative analysis.

Stay tuned…

Analysis, Big Data, Experimentation, IoT, Neo4j, Tech

AWS Rekognition Graph Analysis – Person Label Accuracy

Last week I wrote a post evaluating AWS Rekognition accuracy in finding people in images. The analysis was performed using the Neo4j graph database.

As I noted in the original post – Rekognition is either very confident it has identified a person or not confident at all. This leads to an enormous number of false negatives. Today I looked at the distribution of confidence for the Person label over the last 48 hours.

You be the judge: