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Reflectance Camera Test Chart Color , Calibration Test Chart Revised Version Of Te232

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Reflectance Camera Test Chart Color , Calibration Test Chart Revised Version Of Te232

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Model Number :	COLOR CAMERA GRAY SCALE TEST CHART
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Reflectance Camera Test Chart Color , Calibration Test Chart Revised Version Of Te232

REFLECTANCE CAMERA TEST CHRAT COLOR AND CALIBRATION TEST CHART (REVISED VERSION OF TE232)

The TE256 is designed to color align HD cameras.

Two 11-graduated counter current gray scales are arranged on a gray background (D≈0.62, remission=24%), the gray scale being graduated logarithmically. Related to the densities of the gray scales: gamma = 0.45, related to the remission values (brightness): gamma = 2.2, that being exactly the reciprocal value of 0.45. The gamma factor 0.45 applies to remission > 1.8% (brightest step 100%). Between 0 and 1.8% the gamma function shows a linear progression (with the factor 4.5). The darkest step is in this area. The gamma function corresponds to Rec. 709. The output of an optimally gamma-corrected camera yields two 11- graduated counter current linear step signals (see figure below). The dynamic range of the gray scales is 63:1.

field	1	2	3	4	5	6	7	8	9	10	11	BG
density	0.05	0.14	0.23	0.33	0.45	0.58	0.73	0.91	1.14	1.43	1.85	0.62

Reference density values of the gray scale

two 11-graduated counter current linear step signals without color signals

The six color patches of the upper line represent the three primary colors red (R), green (G) and blue (B) as well as the three secondary colors cyan (C), magenta (M) and yellow (Y) according to the HDTV standard ITU-R BT.709 . Since it is impossible to depict the 100% saturated colors on a reflectance chart, the saturation is reduced to the maximum color space of the printer.

The six color patches of the lower line (yellow/green, blue, green, pink, red, magenta) represent the colors between the primary colors.

In addition to the gray scales and color patches for patches with skin tones are located.

		L	a	b	X	Y	Z	R'709	G'709	B'709	Y'709	C'_B709	C'_R709
Upper row	Y	84.54	-15.01	48.18	0.59	0.65	0.25	0.88	0.81	0.38	191	78	140
	C	56.09	31.23	38.03	0.32	0.24	0.08	0.79	0.36	0.20	112	99	178
	G	69.76	-32.54	43.76	0.31	0.40	0.14	0.54	0.68	0.26	152	85	117
	M	69.18	-24.81	-11.15	0.32	0.40	0.49	0.42	0.67	0.67	151	135	100
	R	57.31	26.01	27.38	0.32	0.25	0.12	0.77	0.39	0.28	118	106	171
	B	63.64	-9.15	-28.86	0.30	0.32	0.57	0.41	0.58	0.75	138	151	108
Skin tones	Skin 1	70.45	-38.85	24.55	0.30	0.41	0.24	0.44	0.70	0.42	154	103	102
	Skin 2	3.95	0.31	-1.21	0.01	0.01	0.01	0.01	0.00	0.00	17	128	129
	Skin 3	94.02	-0.86	-3.49	0.85	0.85	0.9	0.99	0.90	0.91	218	126	138
	Skin 4	61,95	35.55	0.51	0.41	0.30	0.30	0.85	0.41	0.52	128	129	175
Lower row	yellow	29.43	51.23	33	0.12	0.06	0.01	0.53	0.00	0.02	41	116	188
	blue	57.96	20.8	19.35	0.31	0.26	0.16	0.73	0.42	0.34	121	111	164
	green	29.62	42.15	42.67	0.11	0.06	0.01	0.50	0.03	0.00	44	113	180
	pink	19.71	41.41	-66.68	0.06	0.03	0.26	0.08	0.03	0.52	32	182	129
	red	31.15	18.03	26.22	0.09	0.07	0.02	0.39	0.17	0.06	61	110	154
	magenta	33.11	45.2	-51.37	0.14	0.14	0.31	0.39	0.11	0.56	60	172	155

Reference Lab and RGB data of the 12 color patches and four skin tone patches

Horizontal and vertical resolution wedges are positioned in circles in the four corners of the test chart. Scaling lines are shown at the outer circular lines (400, 600 and 1200 lines). In addition, cross-color interferences as well as the effects of notch filters and comb filters can be observed.


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Reflectance Camera Test Chart Color , Calibration Test Chart Revised Version Of Te232

Reflectance Camera Test Chart Color , Calibration Test Chart Revised Version Of Te232

Reflectance Camera Test Chart Color , Calibration Test Chart Revised Version Of Te232

REFLECTANCE CAMERA TEST CHRAT COLOR AND CALIBRATION TEST CHART (REVISED VERSION OF TE232)

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Reflectance Camera Test Chart Color , Calibration Test Chart Revised Version Of Te232