Ideally, Grayscale and colour images are displayed together on a monitor.
Ideally, Grayscale and colour images are displayed together on a monitor.

Sponsored • Image Processing

Analysing images pixel by pixel

Sometimes innovations face a long journey before becoming a final product. This particularly applies to medical displays – due to very high quality demands and strong regulations that are mandatory in this segment.

For an optimal display of differently coloured images, each individual pixel is read out separately
Source: Totoku

In the past, the Japanese display vendor Totoku implemented a couple of innovations into its products, among them Dynamic Gamma. In many cases, safe diagnosis needs simultaneous onscreen display of  Grayscale and colour images. This is a real challenge because Grayscale and colour images require different gamma curves. Grayscale images require DICOM and colour images are best displayed with a Gamma of 2.2. This is where Dynamic Gamma shows it advantage.

‘Dynamic  Gamma,’ explains Marcel Herrmann, Totoku’s Marketing Manager, ‘analyses  the screen content pixel by pixel and applies different gamma curves to  each pixel, even when working with moving images in real time. Using the latest hardware technology we can handle this without delay, even though it requires millions of operations per second.’

Brighter is not always better

Source: Totoku

‘From the beginning customers wanted highly bright colour displays. However, such brightness is not always helpful, for example in case of text processing or reporting,’ Herrmann pointed out. ‘The automatic text mode detects those bright areas and reduces their brightness. Any other area remains untouched, which enables continuous precise diagnosis. This works like Dynamic Gamma without any configuration from user side.’

These functions are added to all current i2 units from Totoku.


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