... A LOW POWER, HIGHDYNAMIC RANGE, BROADBAND VARIABLE GAIN AMPLIFIER FOR AN ULTRA WIDEBAND RECEIVER A Thesis by LIN CHEN ... Costas Georghiades May 2006 Major Subject: Electrical Engineering iii ABSTRACT A Low Power, HighDynamic Range, Broadband Variable Gain Amplifier for an Ultra Wideband Receiver (May 2006) Lin Chen, ... Noise Group Delay Power Range (MHz) IIP3 Figure Variation (mW) (dB) IBM6HP f-1dB f-3dB (dBm) (dB) (pS) ~ 42 >264 >350 >-15
... new discipline of highdynamicrange imaging that combines photography and computer graphics Historically, traditional wet photography managed the recording of highdynamicrange imagery through ... be used in the same context as highdynamicrange imagery? What compression techniques can be employed to deal with the increased data generated by highdynamicrange imaging systems? How can ... successfully showed that in images with limited dynamic range, our simulations were more accurate when compared to a real scene than previous heuristics, but we left the highdynamicrange problem hanging...
... Systems High performance MCU (e.g., AT91CAP7E) High- speed imagesensor High- speed imagesensor Low performance MCU (e.g., ATmega644) iBridge H/W (a) (b) Figure 14: Interfacing with image sensor: ... presented In [18], a CMOSimagesensor has been designed to perform the front-end image decomposition in a Prediction-SPIHT image compression scheme In [19], an imagesensor unit with sensor to detect ... circuitry Imagesensor (dedicated) Image processor (general) Memory (fixed) Imagesensor (general) Control circuitry Memory (variable) Proposed bridge hardware Image processor (general) Figure 1: Image...
... capitalintensive, and image sensors’ low volume (relative to mainstream logic and memory circuits) mean they are relatively high- cost devices, especially where high performance is concerned CCD and CMOS imagers ... full frame CCDs: high fill factor, and charge capacity, slightly lower blue sensitivity, highdynamic range, and highly uniform output enabled (and limited ) by a small number of high- bandwidth ... Solid-State Imager Basics All CCD and CMOSimage sensors operate by exploiting the photoelectric effect to convert light into electricity, and all CCDs and CMOS imagers must perform the same basic...
... vào layer Background Copy tạo để chọn Tiếp theo, vào menu Filter -> Other -> High Pass Cửa sổ High Pass lên: Cửa sổ High Pass lên Bây chọn giá trị Radius tùy vào kích thước chi tiết cần làm rõ ... OK Bạn thấy số giá trị màu sắc sót lại layer High Pass (vốn có màu xám) nên để loại bỏ vào menu Image -> Adjustments -> Desaturate Để dùng Layer High Pass tạo để điều chỉnh độ sắc nét cho ảnh ... Bấm OK Kết giống lúc dùng High Pass, với độ xác cao hẳn Bấm chuột phải vào Layer có Gaussian Blur chọn Delete để xóa Tiếp theo thao tác Layer Apply Image giống với layer High Pass: dùng lệnh Desaturate,...
... appearance of the enhanced images since the resulting images of the proposed method have a compressed dynamicrange with high local contrast that might cause an unnatural image appearance However, ... reproduction for digital images Proc SIGGRAPH2002 ACM; 2002, 267-277 Meylan L, Süsstrunk S: Highdynamicrangeimage rendering with a Retinex-based adaptive filter IEEE Trans Image Process 2006, 15(9):2820-2830 ... variant dynamicrange compression algorithm with local contrast preservation based on the concept of local contrast range transform Although this method performs well for enhancement of LDR images,...
... appearance of the enhanced images since the resulting images of the proposed method have a compressed dynamicrange with high local contrast that might cause an unnatural image appearance However, ... reproduction for digital images Proc SIGGRAPH2002 ACM; 2002, 267-277 Meylan L, Süsstrunk S: Highdynamicrangeimage rendering with a Retinex-based adaptive filter IEEE Trans Image Process 2006, 15(9):2820-2830 ... variant dynamicrange compression algorithm with local contrast preservation based on the concept of local contrast range transform Although this method performs well for enhancement of LDR images,...
... chip cảm biến CMOS Ở thời điểm tại, loại máy dùng chip cảm biến CMOS thắng thị trường cao cấp so với loại máy dùng chip cảm biến CCD Sự trở lại ngoạn mục CMOS Trước đây, chip cảm biến CMOS trang ... chip CMOS nhỏ hơn, nhẹ hơn, rẻ tiêu thụ điện hơn, phải hy sinh chút chất lượng hình ảnh So sánh chíp CCD CMOS Trước đây, máy ảnh, máy quay video kỹ thuật số dùng chip cảm biến ánh sáng CMOS loại ... 14 triệu điểm ảnh nhờ vào chip cảm biến CMOS hệ Còn Canon tiếp tục phát triển chip CMOS tung dòng máy Canon EOS 1Ds với 11 triệu điểm ảnh Đến lúc này, CMOS vượt qua CCD độ nhạy sáng, độ phân...
... http://avspublications.org/jvstb/about/rights_and_permissions 041601-3 Wen et al.: High precision dynamic alignment and gap control 041601-3 FIG (a) Sketch of ISPI checkerboard gratings and typical fringe image captured by the ISPI camera (b) ... the use of ISPI, we can align the optical mask and the photoresist substrate to a high degree of parallelism and dynamically control the gap during the lithography process, and to realize parallel ... http://avspublications.org/jvstb/about/rights_and_permissions 041601-1 041601-2 Wen et al.: High precision dynamic alignment and gap control 041601-2 FIG (a) Illustration of the experimental setup;...