基于对象的图像编辑

W. Barrett, Alan S. Cheney
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引用次数: 122

摘要

我们介绍了基于对象的图像编辑(OBIE),用于静态数字照片的实时动画和操作。单个图像对象(如手臂或鼻子,图1)被选择、缩放、拉伸、弯曲、扭曲甚至删除(自动填充孔洞)——在对象层面,而不是像素层面——使用鼠标的简单手势运动。OBIE为用户提供了对对象形状、大小和位置的直接、本地控制,同时大大减少了执行图像编辑任务所需的时间。对象选择是通过手动收集分水岭算法检测到的(子对象)区域来完成的。物体被镶嵌成一个三角形网格,允许使用OpenGL的纹理映射硬件实时执行形状修改。通过使用锚点,用户能够交互式地对整个对象或对象的一部分进行编辑操作,包括移动、缩放、旋转、拉伸、弯曲和删除。通过使用滑块和贝塞尔曲线,还提供了对对象形状的间接操作。由运动产生的洞会根据周围的纹理实时填充。当物体拉伸或缩放时,我们提供了一种保留纹理粒度或缩放的方法。我们还提供了一个纹理刷,它允许用户使用现有的图像纹理将纹理“绘制”到图像的不同部分。OBIE允许用户在几秒到几十秒内对图像对象进行交互式高级编辑
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Object-based image editing
We introduce Object-Based Image Editing (OBIE) for real-time animation and manipulation of static digital photographs. Individual image objects (such as an arm or nose, Figure 1) are selected, scaled, stretched, bent, warped or even deleted (with automatic hole filling) - at the object, rather than the pixel level - using simple gesture motions with a mouse. OBIE gives the user direct, local control over object shape, size, and placement while dramatically reducing the time required to perform image editing tasks.Object selection is performed by manually collecting (subobject) regions detected by a watershed algorithm. Objects are tessellated into a triangular mesh, allowing shape modification to be performed in real time using OpenGL's texture mapping hardware.Through the use of anchor points, the user is able to interactively perform editing operations on a whole object, or just part(s) of an object - including moving, scaling, rotating, stretching, bending, and deleting. Indirect manipulation of object shape is also provided through the use of sliders and Bezier curves. Holes created by movement are filled in real-time based on surrounding texture.When objects stretch or scale, we provide a method for preserving texture granularity or scale. We also present a texture brush, which allows the user to "paint" texture into different parts of an image, using existing image texture(s).OBIE allows the user to perform interactive, high-level editing of image objects in a few seconds to a few ten's of seconds
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Session details: 3D acquisition and image based rendering Session details: Geometry Session details: Soft things Session details: Lighting and appearance Session details: Images and video
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