As an engineer, I found that it was important to learn certain basic mathematical concepts. Since, you also may need to know about scientific things, I put together some examples. By the way, all these diagrams are from Instachaaz,
Probability Density Function: The probability histogram shows how likely it is for something to occur over time, or over some other variable. For example:
Resolution required for Recognition, Detection, Identification depends on the type of camera
By Bob Mesnik
There is some confusion in the industry about how much camera resolution is required to detect an object, recognize the type of object, or identify exactly what or who it is. The criteria are different between thermal and optical cameras. Resolution for thermal cameras and optical IP cameras are measured differently.
For example, when defining the performance of a thermal camera we use the Johnson Criteria of “detection”, “recognition” and “identification” (DRI).
On the other hand, IP camera resolution performance is usually defined by the number of pixels in the sensor, and we are usually interested in the ability to identify a person.
How much resolution do you need? This article compares how resolution is defined using thermal and optical technologies.
Continue reading “Detection, Recognition, and Identification – Thermal vs. Optical IP Camera”
How to determine the resolution required for your IP camera system
By Bob Mesnik
How much resolution do you need? It depends on what you need to see. Do you want to identify who stole your car, or just see that there’s a dog in your yard again.
It’s very important to first determine exactly what you want to see, because it will affect how much your IP camera system costs.
This article reviews the amount of resolution required to recognize objects such as people, vehicles, license plates, or even a small crack in a wall.
Definition of an Engineer:
Someone who solves a problem you had no idea you had, and does it in a way you don’t understand.
Tech support Issues:
Helpdesk: What’s on your monitor now ma’am?
Customer: A teddy bear my boyfriend bought for me in the supermarket.
During a recent password audit, it was found that a blonde was using the following password:
PoE makes installation very easy
By Bob Mesnik
This article has been updated on 10/4/2018 to reflect the new PoE injectors available.
Many network-attached devices, such as IP cameras, VoIP phones, WiFi radios, and IP door readers use power over Ethernet (PoE). The single network cable transfers both data and power to the device making installation very simple. The data uses one set of wires, while the power uses another set of wires in the network cable.
The real art of conversation is not only to say the right thing at the right time, but also to leave unsaid the wrong thing at the tempting moment.
The older you get, the tougher it is to lose weight, because by then your body and your fat have gotten to be really good friends.
The easiest way to find something lost around the house is to buy a replacement.
He who hesitates is probably right.
If you think there is good in everybody, you haven’t met everybody.
If you can smile when things go wrong, you have someone in mind to blame.
The sole purpose of a child’s middle name is so he can tell when he’s really in trouble.
Continue reading “Technical Jokes and Cartoons 16”Zen Sarcasm
Do not walk behind me, for I may not lead.
Do not walk ahead of me, for I may not follow.
Do not walk beside me either.
Just pretty much leave me the hell alone.
Optical Archiving Libraries make it easy to protect your data.
by Bob Mesnik
So you are being dragged kicking and screaming to archive your e-mails and data. What can you do that doesn’t cost an arm and a leg? Well, the new jukebox library systems with the latest 100 GB media are now an economical alternative to tape, and provide the best way to archive your data.
The library software makes the jukeboxes easy to use so you can archive your data quickly and automatically. Blu-ray media is now the same price per megabyte as the tape media, and provides archive quality that’s not available with tape.
So you are being dragged kicking and screaming to archive your e-mails and data. What can you do that doesn’t cost an arm and a leg? Well, the new jukebox library systems with the latest 100 GB media are now an economical alternative to tape, and provide the best way to archive your data.
The library software makes the jukeboxes easy to use so you can archive your data quickly and automatically. Blu-ray media is now the same price per megabyte as the tape media, and provides archive quality that’s not available with tape.
Continue reading “How to Comply With the Archiving Regulations Without Paying an Arm and a Leg”
The technology for storing data continues to bring us ever-increasing capacity. First, there were CD-ROM discs, next the DVD-discs, which increased capacity and data transfer speed. Now we have blu-ray discs that provide 100 GB of storage. They are used in optical jukeboxes or libraries for archiving computer data
Blu-ray Discs (BD) was introduced by Sony in October 2000. Even though this new technology was developed for the consumer market, it also was capable of handling computer data. As a matter of fact, Blu-ray became the standard in both markets.
Meeting the requirements of the Sarbanes-Oxley Act
As I recall, the first optical discs became available in the fall of 1984. I was working for Sony at the time, and one of the engineers from Japan visited our office in New Jersey. “Bob”, he said, “Do you want to sell WORM in the US?” I looked at him kind of funny and said, “We don’t eat worms in this country”. “Oh no Bob-san, not worms, Write Once Read Many – W, O, R, M. This is optical disc”. This was my first introduction to optical storage. The technology has improved dramatically over the years and the market for the product has grown. Today optical disc systems are starting to replace tape libraries. The cost per megabyte is about the same, but optical storage is archival while tape is not.
As I recall, the first optical discs became available in the fall of 1984. I was working for Sony at the time, and one of the engineers from Japan visited our office in New Jersey. “Bob”, he said, “Do you want to sell WORM in the US?” I looked at him kind of funny and said, “We don’t eat worms in this country”. “Oh no Bob-san, not worms, Write Once Read Many – W, O, R, M. This is optical disc”. This was my first introduction to optical storage. The technology has improved dramatically over the years and the market for the product has grown. Today optical disc systems are starting to replace tape libraries. The cost per megabyte is about the same, but optical storage is archival while tape is not.
There are many reasons to archive corporate and government information. For example, the Sarbanes-Oxley Act of 2002 defines regulations for saving information. Here is a summary of some of the reasons for using optical jukeboxes to meet these requirements:
Continue reading “How to handle all the Information that needs to be Archived”