As polarization is an important characteristic of light, polarization image detecting is a new image detecting
technology of combining polarimetric and image processing technology. Contrasting traditional image detecting in ray
radiation, polarization image detecting could acquire a lot of very important information which traditional image
detecting couldn't. Polarization image detecting will be widely used in civilian field and military field. As polarization
image detecting could resolve some problem which couldn't be resolved by traditional image detecting, it has been
researched widely around the world. The paper introduces polarization image detecting in physical theory at first, then
especially introduces image collecting and polarization image process based on CIS (CMOS image sensor) and FPGA.
There are two parts including hardware and software for polarization imaging system. The part of hardware include
drive module of CMOS image sensor, VGA display module, SRAM access module and the real-time image data
collecting system based on FPGA. The circuit diagram and PCB was designed. Stokes vector and polarization angle
computing method are analyzed in the part of software. The float multiply of Stokes vector is optimized into just shift
and addition operation. The result of the experiment shows that real time image collecting system could collect and
display image data from CMOS image sensor in real-time.
Artificial retina is aimed for the stimulation of remained retinal neurons in the patients with degenerated photoreceptors.
Microelectrode arrays have been developed for this as a part of stimulator. Design such microelectrode arrays first
requires a suitable mathematical method for human retinal information processing. In this paper, a flexible and adjustable
human visual information extracting model is presented, which is based on the wavelet transform. With the flexible of
wavelet transform to image information processing and the consistent to human visual information extracting, wavelet
transform theory is applied to the artificial retina model for the retinally blind. The response of the model to synthetic
image is shown. The simulated experiment demonstrates that the model behaves in a manner qualitatively similar to
biological retinas and thus may serve as a basis for the development of an artificial retina.
Minimum resolvable temperature difference (MRTD) is a common figure of merit for assessing the performance of thermal imagers, because it represents the thermal sensitivity and spatial resolution. The work in this paper focuses on the design of an instrument that can provide the performance parameter MRTD for the measurement. The instrument under our research, adopted a new work principle based on the theory of Heat Transfer, appears more miniaturized and more portable, which makes the impractical fieldwork possible. In this paper, the new method that enables the high accuracy plane radiation source in the instrument is presented in detail. By means of the theory of heat transfer, the finite elements analysis (FEA) method and the MATLAB software, the analysis and simulation of temperature-field of the
plane radiation source is carried out. Subsequently, the geometrical parameter of the instrument architecture is optimized and the model instrument is manufactured. Finally, the experiment with the model is implemented and the data of the temperature-field is collected. The predictions of the theoretical results are found to agree well with the experimental data. Moreover, the uniformity and stability of temperature-field can meet the requirements of the inspection for the
thermal imaging system.