• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>SPIE Conference on Emerging Digital Micromirror Device Based Systems and Applications >High-dynamic range DMD-based IR scene projector
【24h】

High-dynamic range DMD-based IR scene projector

机译：高动态范围DMD的IR场景投影仪

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

OPTRA is developing a next-generation digital micromirror device (DMD) based two-band infrared scene projector (IRSP) with infinite bit-depth independent of frame rate and an order of magnitude improvement in contrast over the state of the art. Traditionally DMD-based IRSPs have offered larger format and superior uniformity and pixel operability relative to resistive and diode arrays, however, they have been limited in contrast and also by the inherent bitdepth / frame rate tradeoff imposed by pulse width modulation (PWM). OPTRA’s high dynamic range IRSP (HIDRA SP) has broken this dependency with a dynamic structured illumination solution. The HIDRA SP uses a source conditioning DMD to impose the structured illumination on two projector DMDs – one for each spectral band. The source conditioning DMD is operated in binary mode, and the relay optics which form the structured illumination act as a low pass spatial filter. The structured illumination is therefore spatially grayscaled and more importantly is analog with no PWM. In addition, the structured illumination concentrates energy where bright object will be projected and extinguishes energy in dark regions; the result is a significant improvement in contrast. The projector DMDs are operated with 8-bit PWM, however the total projected image is analog with no bit-depth / frame rate dependency. In this paper we describe our progress towards the development, build, and test of a prototype HIDRA SP.
机译：OPTRA正在开发基于下一代的数字微镜器件（DMD）的双频红外场景投影仪（IRSP），其无限钻头深度与帧速率无关，与最新的帧速率和幅度的幅度提高。传统上，基于DMD的IRSP具有更大的格式和相对于电阻和二极管阵列的卓越的均匀性和像素可操作性，然而，它们的对比度是有限的，并且还受到脉冲宽度调制（PWM）所施加的固有比特图/帧速率折衷。 OPTRA的高动态范围IRSP（HIDRA SP）与动态结构化照明解决方案打破了这种依赖。 Hidra SP使用源调节DMD在两个投影仪DMDS上施加结构化照明 - 每个光谱频带。源调节DMD以二进制模式操作，以及形成结构化照明的中继光学器件作为低通空间滤波器。因此，结构化照明在空间上灰度，更重要的是与没有PWM的类似物。此外，结构化照明集中精力，在明亮物体将投射并在暗区内熄灭能量;结果是对比度的显着改善。投影机DMDS以8位PWM运行，但总投影图像是模拟的，没有位深度/帧速率依赖性。在本文中，我们描述了我们对开发，构建和测试原型HIDRA SP的进展。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号