4kScope
4kScope
4K/2K/HD/SD Video Measurement Tool

Drastic 4KScope is the world's first 4K software waveform, vectorscope, histogram and monitor. Designed to take advantage of the AJA Kona 3G's Quad HD and 4K capture modes, this product provides the most cost effective 4K monitoring solution available.

Drastic 4KScope is available:

  • for Windows 32/64 XP through 7
  • for Apple OS-X 10.6 or greater
  • for Linux as an OEM product
  • as complete turnkey solution (incl. hardware)

Measure Everything

The Drastic 4KScope provides a real time professional quality signal analysis tool for on set, production, post production, and research and development environments.

View your color bars, test patterns, live camera or telecine signal for device or facility installation, setup, commissioning/certification and other operational reference. Confirm that the color gamut and analog transmission limits are not violated and that the color phase is accurate. Multiple inputs may be compared when viewing the output of a switcher, to coordinate a multi-device setup.

 
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Vectorscope

4kScope Vectorscope

The vectorscope displays a traditional Cb by Cr X-Y display with overlaid reference graticule. Color accurate graticules automatically switch between SD and HD colorspaces. The markers include color points (for standard bar checks) at 75% and 100% saturation. All the standard points are boxed; red, magenta, blue, cyan, green and yellow. A skin tone/flesh line is provided to allow for easy hue adjustment as well as standard diagonals.

The exclusive Drastic Luma Stick (patent pending) displays luminance distribution and strength in a space saving and intuitive graphic format.

At all times a minimum and maximum value for each of the channels (Y, Cr and Cb) is displayed in 10 bit mode (0-1023). The color of the text for each channel indicates the following: in range (green), out of range but legal (yellow) and illegal/sync values (red).

Finally, a mini pic is always available as a confidence monitor.

For single link 8 and 10 bit YCbCr signals, there is no color processing involved. For dual link 4:4:4 RGB signals, the equivalent Cb and Cr are calculated to create the display.


Waveform YCbCr

4kScope Waveform YCbCr

The YCbCr waveform monitor displays the levels of the Y, Cb and Cr from the left of the picture to the right of the picture with all the lines summed into one graph. The Y, or luma/luminance, graph provides accurate white and black level information, as well as the range in between. The Cb and Cr display the +/- 512 levels of chroma of both types. This provides a visual representation of the chroma range of the signal.

Critical for downstream color correction is the need to ensure proper luminance levels at the stage of initial capture, so any corrections will not muddy or wash out the signal information.

At all times a minimum and maximum value for each of the channels (Y, Cr and Cb) is displayed in 10 bit mode (0-1023). The color of the text for each channel indicates the following: in range (green), out of range but legal (yellow) and illegal/sync values (red).

Finally, a mini pic is always available as a confidence monitor.

For single link 8 and 10 bit YCbCr signals, there is no color processing involved. For dual link 4:4:4 RGB signals, the equivalent Cb and Cr are calculated to create the display.


Waveform RGB

4kScope Waveform RGB

The RGB waveform monitor shows each of the red, green and blue signals as independent graphs, displaying the RGB, or chrominance/color values associated with the signal.

At all times a minimum and maximum value for each of the channels (R, G and B) is displayed in 10 bit mode (0-1023).

Finally, a mini pic is always available as a confidence monitor.

For dual link RGB signals, the orignal RGB 10 bit values are used unprocessed. For single link YCbCr signals, they are first converted to RGB before being analyzed and displayed.


Histogram

4kScope Histogram

The histogram view shows the distribution of red, green and blue within the signal as a series of discrete bars that make a continuous graph for each color. This display provides an overview of the tonal range of each color in the picture. Each bar is the count of the number of pixels for one of the 1024 possible colors. These totals are then auto ranged to fit within the graticule and represent the relationship between the shades of each color and between each other.

Each color has its own graph. The color's levels are represented from left to right, with the absolute left being 0 and the absolute right being 1024. The scale is presented as a percentage to allow for extremely bright or dark pictures to be analyzed without truncating.


Picture

4kScope Picture

The Picture view shows the video signal, to confirm the source is correct and to display time code location. Both picture safe and title safe graticules are optionally available.

There is a scaled down version of the signal input on the right of each of the vectorscope, waveform monitors and histogram views. They are a useful reference but smaller than the Picture view. This view exists to provide the fullest display of the signal for optimum quality viewing.


Setup

4kScope Setup

Setup controls the overall configuration of the scopes and associated hardware.

Video Input selects the HD-SDI, HDMI or analog inputs. In the case of dual link, 2 inputs are used. In the case of quad hd (3840 x 2160) and 4K (4096 x 2160), all four I/O ports of the 3D are in use, so the downconvert is HDMI and analog only.

Audio Input selects either the embedded audio tracks (HD-SDI or HDMI depending on input), or the AES/EBU audio inputs. On some hardware, analog audio inputs are also available.

Signal Format lists all the formats supported by the I/O hardware.

Color Space determines the processing mode. In the case of single link, this can be 8 or 10 bit YCbCr or RGBA 8. For dual link it is normally YCbCr 10 or RGB 10.

Picture Mode determines how the conversion is done. All standard modes for up and down conversion are supported.

Down Convert determines the output signal type. The output can match the input or be converted to another up or down signal format.

Output determines the analog output formats. In SD this can be composite, s-video or component. For HD only component is supported.


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