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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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VX6854LC датащи(PDF) 87 Page - STMicroelectronics |
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VX6854LC датащи(HTML) 87 Page - STMicroelectronics |
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87 / 114 page  DocID027110 Rev 2 87/114 VX6854LC EDoF control 102 10.3 EDOF control registers [0x0B80 to 0x0B8A] Table 66 lists the different registers that the end user can configure to tune the EDoF block. 10.3.1 EDoF_Mode (0xB80) The EDoF block can be disabled or enabled. The interest of disabling this block would be to save some power consumption. When enabling EDoF, two modes are available: • Estimation mode This mode is dedicated to image preview (Viewfinder) only. EDoF correction is not being applied but statistics are gathered for distance estimation. Estimation mode can be full resolution or subsampled or binned image up to a maximum of x4 in both directions. If too much subsampling is performed the image out of the sensor becomes sharp and focus distance estimation is not possible. • Application mode This is used for capture (or snapshot). The EDoF distance calculated during estimation is applied to the image. The application mode can only be enabled after the estimation mode has been selected, otherwise the EDoF correction will not be applied. EDoF cannot be applied to subsampled or binned images as it is not necessary to correct images when they are subsampled as the image blur introduced by the lens does not Table 66. EDOF registers [0x0B80 to 0x0B8A] Index Byte Register name Data type Default Type Comment 0x0B80 edof_mode 8UI 00 RW EDOF control 0 - EDOF disabled (power saving) 1 - EDOF application (Capture) 2 - EDOF estimation (Preview) 0x0B82 edof_est_focus_dista nce 8UI 32 RO The estimated focus point (cm) 0x0B83 edof_sharpness 8UI 00 RW EDOF sharpness control 0 - 127: Manual mode 0x0B84 edof_denoising 8UI 00 RW EDOF denoising control 0 - 127: Manual mode 0x0B85 edof_module_specific 8UI 00 RW EDOF noise vs. details control 0 - 127: Manual mode 0x0B88 Hi edof_focus_distance 16UI 00.32 RW Value supplied by the host which is used by module for focus distance (in cm). 0x0000 to 0x7FFF - manual mode 0x8000 to 0xFFFF - auto mode 0x0B89 Lo 0x0B8A edof_estimation_cont rol 8UI 00 RW EDOF estimator control 0/1 - uniform 2 - centre weight 4 - large spot 8 - narrow spot |
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