c15bc1 aptina, c15bc1 Datasheet - Page 46

• Manufacturer Part Number: c15bc1
• Description: Mt9d014 1/4-inch 2mp Cmos Digital Image Sensor
• Manufacturer: aptina

Figure 20:
Fade-to-Gray Color Bars Test Pattern
PDF: 0526161444/Source:6112702771
MT0D014_DS - Rev. J 5/10 EN
100 Percent Color Bars Test Pattern
The effect of setting horizontal_mirror in conjunction with this test pattern is that the
order in which the colors are generated is reversed. The black bar appears at the left side
of the output image. Any pattern repeat occurs at the right side of the output image
regardless of the setting of horizontal_mirror. The state of vertical_flip has no effect on
this test pattern.
The effect of subsampling and scaling of this test pattern is undefined.
In this test pattern, shown in Figure 21 on page 47, all pixel data is replaced by a Bayer
version of an 8-color, color-bar chart (white, yellow, cyan, green, magenta, red, blue, and
black). Each bar is 200 pixels wide and occupies 1024 rows of the output image. Each
color bar fades vertically from full intensity at the top of the image to 50 percent inten-
sity (mid-gray) on the 1024th row. Each color bar is divided into a left and a right half, in
which the left half fades smoothly and the right half fades in quantized steps every 8
pixels for a given color. Due to the Bayer pattern of the colors this means that the level
changes every 16 rows. The pattern repeats horizontally after 8 * 200 = 1600 pixels and
vertically after 1024 rows (using 10-bit data, the fade-to-gray pattern goes from 100 to 50
percent or from 0 to 50 percent for each color component, so only half of the 2
the 10-bit data are used. However, to get all of the gray levels, each state must be held for
two rows, hence the vertical size of 2
x_addr_start, x_addr_end, y_addr_start, and y_addr_end and may be affected by the
setting of x_output_size and y_output_size. The color-bar pattern starts at the column
identified by x_addr_start. The number of colors that are visible in the output is depen-
dent upon x_addr_end – x_addr_start and the setting of x_output_size. The width of
each color-bar is fixed at 200 pixels.
The effect of setting horizontal_mirror or vertical_flip in conjunction with this test
pattern is that the order in which the colors are generated is reversed. The black bar
appears at the left side of the output image. Any pattern repeat occurs at the right side of
the output image regardless of the setting of horizontal_mirror.
The effect of subsampling and scaling of this test pattern is undefined.
Horizontal mirror = 0
46
MT9D014: 1/4-Inch 2Mp CMOS Digital Image Sensor
10
/ 2 * 2 = 1024). The image size is set by
Aptina reserves the right to change products or specifications without notice.
Horizontal mirror = 1
Sensor Core Digital Data Path
©2007 Aptina Imaging Corporation. All rights reserved.
10
Preliminary
states of