Spatial Transform and Lens Distortion Correction (STLDC) for Blackfin
Product Details
Features
- Modules: Camera Calibration, Lens Distortion Correction, Affine Transform.
- Cache: Both Instruction and Data Cache enabled.
- MDMA: One channel Memory DMA is used.
- Host based project using OpenCV functions calibrates camera’s intrinsic and extrinsic parameters
- This module supports both Cache and MDMA modes.
- In Cache mode input and output buffers are cached and the module uses data from these buffers directly.
- In MDMA mode the input is brought from L3 to L1 and output is moved from L1 to L3 using memory DMA and module uses the data from L1 buffers.
- Configuration parameters are available from camera calibration module.
- Configuration parameters available to set either the cached or DMA mode,
- Can correct distortion in fish-eye lens also.
- Includes modules for image transformations such as shift, scale, shear, rotate.
- This module supports both Cache and MDMA modes.
- In Cache mode input and output buffers are cached and the module uses data from these buffers directly.
- Re-entrancy: Supported.
- Release Format: Object code module with C source wrapper.
- Input Format: 8/16-bit PGM, 24/48-bit PPM.
- Output Format: 8/16-bit PGM, 24/48-bit PPM.
Product Downloads
System Requirements
- Windows XP Professional SP3 (32-bit only).
- Windows Vista Business/Enterprise/Ultimate SP2 (32-bit only). It is recommended to install the software in a non-UAC-protected location.
- Windows 7 Professional/Enterprise/Ultimate (32 and 64-bit). It is recommended to install the software in a non-UAC-protected location.
- Minimum of 2 GHz single core processor, 3.3 GHz dual core is recommended.
- Minimum of 1 GB memory (RAM), 4 GB is recommended.
- Minimum of 2 GB hard disk (HDD) space is required.
- CrossCore Embedded Studio for Analog Devices Processors
Performance Metrics
MIPS summary:
| Memory (Bytes) | Performance | |||||
|---|---|---|---|---|---|---|
| Module | Width/Height | Code (KiB) | Data RAM (KiB) | Data ROM | Average Cycles/Pel | MIPS |
| Lens Correction : stldc_lc_demo_inp_1.pgm | 720 x 480 | 12.682 | 13.89 | 1350 | Initialization : 512.7805 Remap:15.3654 |
159.32 |
| Affine Transform:stldc_at_demo_inp_1.pgm | 720 x 480 | 4.656 | 13.89 | 0 | 409.1987 | 4242.57 |
- MIPS measured optimal memory layout, on ADSP BF561.
- Init code will be called once to populate camera parameter tables for a given frame size.
- Remap code will perform the required interpolation between pixels to correct the distorted image for each pixel.
- For the optimal memory layout, all code and data used by the module was L3 cached and the input/output buffers were filled using MDMA memory.
- "Data RAM" for one instance, includes Stack, Scratch, Instance/Stage, Minimum Input and Output Single Buffers.
- 1 KiB = 1024 Bytes.
- BF561 supported for VisualDSP++5.0 Update 10 project and ADSP-BF609, BF527, BF533 for CrossCore Embedded Studio 1.0.1 projects.
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Availability and Licensing
Each module supports the Analog Devices, Inc. (ADI) Blackfin or SHARC Processor family and is a licensed product that is available in object code format. Recipients must sign or accept a license agreement with ADI prior to being shipped or downloading the modules identified in the license agreement.
