Icon of program: HDRpad

HDRpad for Windows

By HDRpadFreeUser Rating

Key Details of HDRpad

  • Blend different exposures photographs to produce a new High Dynamic Range photo.
  • Last updated on August 18, 2011
  • There have been 3 updates
  • Virus scan status:

    Clean (it's extremely likely that this software program is clean)


Enlarged image for HDRpad

Editors' Review

Download.com staff

In nature, light ranges from blinding intensity to the faintest flicker. In photography and digital imagery, that range of intensity is difficult to capture. HDRI stands for High Dynamic Range Imaging, a technology that increases the dynamic range of luminance in digital images, allowing for a more realistic representation of actual light levels. HDRpad is a free HDRI tool. It blends digital images with different exposures into a single new image with HDRI properties. You can also use HDRpad to correct underexposed images. It's largely automatic in operation, though it offers custom settings, too.

HDRpad's interface is fairly simple as image editing tools go, with a basic toolbar containing the usual file, zoom, navigation, and help buttons, plus a few extra ones related to the exposure fusion and contrast enhancement controls. However, this interface has what may be the clunkiest desktop behavior we've seen in a long time. The chief problem is that it seems to be limited to a full-screen view. Whenever we tried to resize the window, it minimized to the toolbar. Unfortunately, clicking its toolbar icon didn't reopen the window. We had to right-click the toolbar icon, select the program, right-click a pop-up, select the program again, and then click Maximize just to restore the interface at all, let alone at a size we liked. That fussiness went on for some time and for us constituted a serious flaw in the user interface.

However, HDRpad did function as claimed when it came to blending exposures. Best results will be obtained with two or more images of the same scene taken at different exposures. You can also fuse unrelated images to create unusual effects, a process that proved effective in landscapes and similar views. The other correction tools worked much like their counterparts in many other programs. The PDF-based manual was clear and nicely illustrated. We'll leave detailed explanations of what HDRI is and how it does what it does to the manual. If you need or want this program's unique capabilities, some frustrating interface action is hardly a deal-breaker.

What's new in version 1.3

Version 1.3 adds automatic photos alignment function.

Explore More


Full Specifications

GENERAL
Release
March 10, 2011
Latest update
August 18, 2011
Version
1.3
OPERATING SYSTEMS
Platform
Windows
Operating System
Windows 2000, Windows Vista, Windows 10, Windows 7, Windows XP, Windows 2003
Additional Requirements
None
POPULARITY
Total Downloads
3,811
Downloads Last Week
0

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User Reviews

5/5

2 User Votes


Developer's Description

Blend different exposures photographs to produce a new High Dynamic Range photo.
HDRpad is a digital photo software for High Dynamic Range imaging (HDRi). HDRpad is a valid alternative to HDR software based on tone mapping algorithms. Using HDRpad you can easily blend different exposures photographs to produce a new photo that has property of High Dynamic Range imaging HDRi. You can also use HDRpad to enhance any single under exposured photo of different format, e.g. Jpeg, Bmp, Tiff etc.and Raw. This HDR software is based on exposure fusion method. In common HDR photo editing software, photos are first processed to produce a photo with a greater range of luminances and then tone mapping is applied to the new synthetic photo to reduce overall contrast to facilitate display of HDR images on devices with lower dynamic range. In contrast, hdr software based on exposure fusion method just combines photos directly into the final photo in a special way that high contrast details from every single source photos are promoted. The new synthetic photo, which is ready for displaying, often shows fewer artifacts and looks "natural" and visualy pleasing. HDRpad is conceptually simple, robust, and easy to use. The system works automatically without the need of manually manipulating system's parameters, even that there is no information about exposures of the input photographs.