Avoiding Optical Low Pass Filters in Your Camera
Optical Low Pass filters are present in the vast majority of digital cameras sold within the consumer market. Their purpose is to reduce or remove possible Moiré effect when capturing fixed details such as clothing with repetitive patterns, or an urban landscape where a number of horizontal or vertical lines are present, such as office building windows.
Imaging in Life Science: Automated Cell Counters
Growing cells in culture dishes or flasks has been in practice for many decades. Traditionally samples from these flasks are collected on a regular basis to determine, among other things, their density and viability. Along with visual inspection of the flasks under a microscope, it was common practice to determine both density and viability using an instrument called a haemocytometer. This manual method was accurate but it had its disadvantages. Continually cleaning, counting and manually logging data was a tedious process. Furthermore, there were biohazard considerations to take into account when carrying out this manual process.
BioBus Mobile Laboratory: Inspiring the Next Generation of Scientists
At the beginning of October, we announced our partnership with BioBus, a mobile laboratory for students based in New York City. The BioBus, a 1974 transit bus, is equipped with over $150,000 worth of research-grade microscopes and staffed by PhD scientists. Its mission? To bring an accessible, immersive, and hands-on laboratory environment to students and the general public, offering them the opportunity to participate in the power and beauty of scientific discovery.
The Camera: One of the Most Important Components on an Unmanned Aerial Vehicle (UAV)
The Unmanned Aerial Vehicle (UAV) market is a wide and increasingly prevalent industry in today’s technologically advanced world. There are over 400 UAV manufacturers worldwide, ranging from low-end consumer products (think Amazon drones) to high-end commercial and military applications. Indeed, UAVs are progressively replacing the use of manned aircrafts and satellites for reasons such as safety, performance, and cost.
Imaging in its Purest Form: Why Industrial-Grade Camera Images Outperform Consumer-Grade Camera Images
Over the last decade, consumer cameras have improved dramatically. Images taken with today’s latest DSLRs, Point and Shoot cameras and even smartphones are incredibly impressive. Decades worth of R&D have contributed to improvements in speed, low-light performance, resolution and color accuracy. Capturing a stunning landscape, macro, or portrait image can easily be done by any modern low-cost camera available today. With all the improvements in consumer-grade cameras, one wonders if architects developing industrial vision systems should consider using them as their camera solution. Let’s take a step back to examine what makes these images look good and what the vision system is looking to accomplish.
The Importance of Timing in Industrial Vision Systems
In the world of industrial imaging, timing can be crucial. The difference between even a few milliseconds of capturing a moving item can vastly change the resulting image. For example, in applications such as factory inspection or speed enforcement traffic systems, if the camera does not start the exposure at a very precise time, the resulting image will be unusable. While delays can be accounted for within the system design, the time between the trigger (a hardware or software input) and the actual start and end of exposure is not always consistent and deterministic. Any fluctuation is difficult to resolve and can cause unavoidable issues in a vision system.
When Color Matters Part 2: Color Reproduction in Microscopy Images
When it comes to viewing microscopic specimens with a monitor or capturing microscopy images with a camera, the colors we perceive down the eyepieces often differ to those viewed on the screen or captured by the camera. This fact begs the question: Does it matter if the images we see down the microscope don’t match those captured by the camera?
It’s All About White Balance: Lumenera Experts Explain the Notorious “Dress” Photo
USB 3.0: The Supercars of Machine Vision
Supercars bring an exhilarating level of performance leaving many of us in awe. The high speed, acceleration and handling are all powerful sensations that come to mind. But if you’ve ever driven a supercar, you also quickly notice the lack of visibility, how awkward it can be just getting into the car, or the unforgiving controls that translate even the slightest driver input into a mad rush of power. For these reasons you may be quite happy leaving the supercar at home for your daily commute to work and jumping into your reliable, comfortable, compact car that is user friendly, provides a smoother ride and that gives you the benefit of greater fuel efficiency. Wouldn’t it be amazing if you could enjoy the best of both worlds?
The Benefits of Multi-Tap Sensors
You may have noticed in recent years the increased number of multi-tap CCD sensors on the market. Multi-tap sensors were created to enable faster frame rates from CCD sensors. The multi-tap CCD structure splits the image frame into two or more areas that are clocked out in parallel. Each sensor tap requires an analog-to-digital converter (ADC) with its own dedicated amplifier. The circuitry associated to each tap has different electronic performance characteristics which impacts the consistency of output between taps, hence tap matching/balancing algorithms are required to provide a uniform image.