Analog Integrated Circuit for Edge Detection with wide Dynamic Range Based on Vertebrate Outer Retina
نویسندگان
چکیده
An analog circuit for edge detection was proposed based on vertebrate outer retinas. The chip which contained 40× 40 unit circuits in a two-dimensional array was fabricated with 0.35 μm CMOS process. Edge images were experimentally observed in a brightness range over 3 orders of magnitude. It was clarified by simulation with the simulation program with integrated circuit emphasis (SPICE) that a wide dynamic range of light intensity over 6 orders of magnitude could be realized by replacing a nonlinear register with a linear register in the fabricated chip.
منابع مشابه
A Light Adaptive 4000 Pixels Analog Silicon Retina for Edge Extraction and Motion Detection
An analog vision chip has been designed 011 the basis of retina models. Biological retinas perforni a massively parallel computation well suited to low level visual processing applications such as edge extraction, motion detection and light adaptation. An analog electrical model has been developed that is suitable for designing analog neural network circuits with low power consumption. This 400...
متن کاملA wide dynamic range CMOS imager with extended shunting inhibition image processing capabilities
A CMOS imager based on a novel mixed-mode VLSI implementation of biologically inspired shunting inhibition vision models is presented. It can achieve a wide range of image processing tasks such as image enhancement or edge detection via a programmable shunting inhibition processor. Its most important feature is a gain control mechanism allowing local and global adaptation to the mean input ligh...
متن کاملAnalog Integrated Circuit for Detection of an Approaching Object with Simple-Shape Recognition Based on Lower Animal Vision
A network for the detection of an approaching object with simple-shape recognition is proposed based on lower animal vision. The locust can detect an approaching object through a simple process in the descending contralateral movement detector (DCMD) in the locust brain, by which the approach velocity and direction of the object is determined. The frog can recognize simple shapes through a simp...
متن کاملVision sensor with brightness constancy: towards neuromorphic color vision
A silicon retina is a VLSI (very large scale integration) chip that has been designed based on the neural architecture and functionality of a biological retina. Such devices are expected to be useful as a novel vision sensors for autonomous mobile robots due to their power efficiency, compactness, and real-time processing ability. In addition, their low noise output and wide operating range are...
متن کاملVersatile Dual-Mode Class-AB Four-Quadrant Analog Multiplier
Versatile dual-mode class-AB CMOS four-quadrant analog multiplier circuit is presented. The dual translinear loops and current mirrors are the basic building blocks in realization scheme. This technique provides; wide dynamic range, wide-bandwidth response and low power consumption. The major advantages of this approach are; its has single ended inputs; since its input is dual translinear loop ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Intelligent Automation & Soft Computing
دوره 12 شماره
صفحات -
تاریخ انتشار 2006