Over a million developers have joined DZone.
{{announcement.body}}
{{announcement.title}}

Thumbs Up for Watson's Visual Recognition Service

DZone's Guide to

Thumbs Up for Watson's Visual Recognition Service

How to use Watson's visual recognition service to enhance your IoT apps on IBM's Bluemix platform.

· IoT Zone
Free Resource

Address your IoT software testing needs – improve quality, security, safety, and compliance across the development lifecycle.

Watson’s Visual Recognition (beta) service on Bluemix understands the contents of images. Since the beginning of the month you can train this service with your own classifications. Below is a simple sample showing how to train Watson to recognize the thumbs up gesture.

This functionality could be used for example in the selfie drone scenario to steer drones using gestures instead of web user interfaces or speech recognition. There are many more scenarios where this service could be valuable, such as damage recognition of buildings and vehicles, tourist guides or tagging of photos.

In order to train the service you need to provide at least 50 images which are positive examples and 50 images which are negative examples. You can try the service online and use predefined sets of images or upload your own images, in my case 100 images with hands.

thumbs1

After 4-5 minutes the Watson service has been trained and you can upload other images to test the new classifier. I used this picture:

thumbs3

Watson returned a confidence score of 85%.

thumbs2

In order to use this functionality in your apps you need to create your own service instance on Bluemix to get your own credentials. To create classifiers you can use REST APIs, Java or Node.js APIs or simply curl commands. The positive and negative sample pictures need to be put in zip files.

curl -u "{username}":"{password}" -X POST -F "positive_examples=@up.zip" -F "negative_examples=@not.zip" -F "name=thumbup" "https://gateway.watsonplatform.net/visual-recognition-beta/api/v2/classifiers?version=2015-12-02"

thumbs4

In order to request classifications of an image you need to provide a JSON file “classifierlist.json” with the classifier IDs.

{
    "classifier_ids": [
        "thumbup_1207786847" 
    ]
}

After this you can invoke this command.

curl -u "{username}":"{password}" -X POST -F "images_file=@thumbs3.JPG" -F "classifier_ids=<classifierlist.json" "https://gateway.watsonplatform.net/visual-recognition-beta/api/v2/classify?version=2015-12-02"


thumbs5

{
"classifier_ids": [
"thumbup_1207786847" 
]
}

Accelerate the delivery of high-quality software in the connected IoT era through an integrated analysis, testing, security, and analytics platform. Parasoft's comprehensive portfolio of testing toolsautomates time-consuming testing tasks and provides management with intelligent analytics and reporting so they can focus on what matters.

Topics:
ibm watson ,bluemix ,recognition

Published at DZone with permission of Niklas Heidloff, DZone MVB. See the original article here.

Opinions expressed by DZone contributors are their own.

THE DZONE NEWSLETTER

Dev Resources & Solutions Straight to Your Inbox

Thanks for subscribing!

Awesome! Check your inbox to verify your email so you can start receiving the latest in tech news and resources.

X

{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}