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#Megapixel to resolution calculator software#

Note: The PCIe-1427 has 16 KB of on-board memory. Can I successfully perform a snap acquisition? My camera has a clock rate of 80 MHz and the board is in a 1x PCIe slot. I am acquiring a 1280x1024 12-bit image at 10 frames per second using a PCIe-1427 frame grabber.

Note: This number should be around 10^6 in magnitude, or Megabytes/second. Bytes/frame x Frame Rate = Bytes/second.Width x Height = Resolution (in pixels).The resolution of the image (also referred to as megapixels)įollow these steps to calculate the bits per second for your acquisition.To calculate the average data rate, you need to know three pieces of information: If a frame is too large to transfer all of the data across the bus in the allotted acquisition time, we will experience an acquisition timeout error.

#Megapixel to resolution calculator software#

The average data rate is the speed at which the software receives an entire frame from the camera, and is determined programmatically by the frame rate.

We can use the FIFO accumulation rate and the frame time to determine the FIFO requirement for one frame.įIFO Requirement = FIFO Accumulation Rate x Frame Time

This number is different from the frame rate and is determined by the camera’s clock rate.įrame Time (s/frame) = Resolution / ( # of Taps x Pixel Clock Rate) We also need to know the amount of time required to acquire one frame from the camera. Use the following equation to calculate the FIFO accumulation rate:įIFO Accumulation Rate (MB/s) = Instantaneous Data Rate - Bus Throughput If the FIFO fills up before a complete frame is acquired, we will experience a buffer overflow, even if we are only acquiring one frame. If the throughput is less than the instantaneous data rate, then we have to consider the rate at with the onboard FIFO will fill. If the throughput from the frame grabber over the bus is larger than the instantaneous data rate, we will not experience any buffer overflows. Once we know the instantaneous data rate, we can then determine if our hardware can handle the acquisition. Instantaneous Data Rate (MB/s) = Pixel Clock Rate (MHz) x Pixel Depth (Bytes) x # of Taps. Use the following equation to calculate the instantaneous data rate: *10 & 12 bit images are represented as 16 bit in memory.

The pixel clock rate of the camera (in MHz).

To calculate the instantaneous data rate, we need to know three pieces of information: If the instantaneous data rate is too high, the frame grabber will not be able to transfer the data across the bus fast enough to empty the buffer and we will experience a buffer overflow error. The instantaneous data rate is the speed at which the camera is streaming data to the frame grabber and is hardware set by the camera's pixel clock rate. The instantaneous data rate is the most important rate to consider. An example of the calculations is included at the end of the article. Descriptions of these two rates, as well as instructions for their calculation are found in the two sections below. Dividing 24 million by 1 million gives 24 megapixels.When it comes to determining the required bandwidth for an acquisition, there are two different data rates we are concerned with finding, the instantaneous and average data rates. The result is then divided by 1 million to give the megapixel count.įor example, if an image has a resolution of 6000 x 4000 pixels, the total number of pixels is 6000 * 4000 = 24 million pixels. Megapixels can be calculated by multiplying the number of pixels on the horizontal axis (width) by the number of pixels on the vertical axis (height) of an image. However, it’s important to note that other factors such as lens quality, sensor size, and image processing algorithms can also affect the overall quality of an image. A high megapixel count typically means that an image will have more detail and clarity, making it ideal for printing or other high-resolution applications. This tool is useful for photographers, image editors, and anyone who needs to determine the resolution of an image. By inputting the width and height of an image in pixels, the calculator will determine the total number of pixels in the image and output the result in megapixels. A megapixel (MP) is equal to one million pixels. The megapixel calculator is a tool that calculates the total number of pixels in an image or camera sensor.