SObjectizer Tales – 6. Is the stream still in progress?

by Marco Arena

In this episode, we are exploring ways to detect if the stream is active in order to improve the current image viewer!

SObjectizer Tales – 5. Sending commands

by Marco Arena

In this upcoming post, we will explore various instances of generating commands from different segments within the program.

SObjectizer Tales – 4. Handling commands

by Marco Arena

What if we could seamlessly command the device to start and stop its acquisition with the wave of our virtual wand?

SObjectizer Tales – 2. Can you call me back

by Marco Arena

A camera vendor has just released a new SDK that works through callbacks. Basically, the user sets a function that will get called by the SDK on every new available frame. How can we integrate this into a producer agent?

SObjectizer Tales - 1. Producing Images

by Marco Arena

Since using any real camera drivers is out of scope, we’ll use OpenCV to open our default camera (e.g. the webcam) and grab frames one by one. In case you don’t have any available camera on your machine, we’ll provide a simple “virtual producer” that replays some images from a directory...

SObjectizer Tales - Prelude

by Marco Arena

Some time ago, I was looking for alternatives to Microsoft’s Asynchronous Agents Library. I developed a Windows application interfacing with industrial cameras and performing multiple tasks such as visualization and object recognition...

Modern C++ In-Depth — Transparent Comparisons

by Michael Kristofik

Searching for an element in a container normally requires constructing an object of the container’s key_type. If the key is small, such as one you’d normally pass by value, it isn’t a performance concern. But what if the key is large?

What do number conversions cost?

by Jens Weller

And so the devil said: "what if there is an easier design AND implementation?"

In the last two blog posts I've been exploring some of the ways to implement a certain type that has a string_view and holds a conversion to a type in a variant or any. And my last blog post touched on conversions. And that made me wonder, what if I did not have a cache in the type for conversions? The memory foot print would be much smaller, and implementation could be simple to convert in a toType function on demand. This then would essentially be a type that holds a string_view, but offers ways to convert this view to a type. Adding a cache to hold the converted value is in this case not necessary, as this is done on demand.

Modern C++ In-Depth — Literal Operators and User-Defined Literals

by Michael Kristofik

In this installment, we’re going to take a look at user-defined literals. First introduced in C++11, this feature allows developers to create custom suffixes that can be used to reduce verbosity.

The Toggle Builder

by Marco Arena

If intended for general usage, the builder can result a bit uncomfortable when we go through some configuration object to toggle features. This often leads to a bunch of ifs..