25 #ifndef MSHADOW_EXTENSION_CROP_H_ 26 #define MSHADOW_EXTENSION_CROP_H_ 27 #include "../extension.h" 36 template<
typename SrcExp,
typename DType,
int srcdim>
39 SrcExp, srcdim, DType> {
52 CHECK_GE(this->
shape_[srcdim - 2], cshape[0]) <<
"CroppingExp: height requirement not met";
53 CHECK_GE(this->
shape_[srcdim - 1], cshape[1]) <<
"CroppingExp: width requirement not met";
54 pad_height_ = (this->
shape_[srcdim - 2] - cshape[0]) / 2;
55 pad_width_ = (this->
shape_[srcdim - 1] - cshape[1]) / 2;
56 src_height_ = this->
shape_[srcdim - 2];
57 this->
shape_[srcdim - 2] = cshape[0];
58 this->
shape_[srcdim - 1] = cshape[1];
63 : src_(src), pad_height_(start_height), pad_width_(start_width) {
65 CHECK_GE(this->
shape_[srcdim - 2], cshape[0] + start_height)
66 <<
"CroppingExp: height requirement not met";
67 CHECK_GE(this->
shape_[srcdim - 1], cshape[1] + start_width)
68 <<
"CroppingExp: width requirement not met";
69 src_height_ = this->
shape_[srcdim - 2];
70 this->
shape_[srcdim - 2] = cshape[0];
71 this->
shape_[srcdim - 1] = cshape[1];
84 template<
typename SrcExp,
typename DType,
int etype>
88 ::Error_Expression_Does_Not_Meet_Dimension_Req();
102 template<
typename SrcExp,
typename DType,
int etype>
107 ::Error_Expression_Does_Not_Meet_Dimension_Req();
109 (src.
self(), oshape, start_height, start_width);
114 template<
typename SrcExp,
typename DType,
int srcdim>
123 const index_t y = i % new_height_;
124 const index_t c = i / new_height_;
137 #endif // MSHADOW_EXTENSION_CROP_H_ CroppingExp< SrcExp, DType, ExpInfo< SrcExp >::kDim > crop(const Exp< SrcExp, DType, etype > &src, Shape< 2 > oshape)
revserse operationg of padding, cut off boundaries, crop output from center of input ...
Definition: crop.h:86
const SubType & self(void) const
Definition: expression.h:82
Definition: expr_engine-inl.h:58
used to help static type check
Definition: expr_engine-inl.h:330
CroppingExp(const SrcExp &src, Shape< 2 > cshape, index_t start_height, index_t start_width)
constructor
Definition: crop.h:61
static Shape< dim > Check(const E &t)
#define MSHADOW_XINLINE
Definition: base.h:230
index_t src_height_
src height
Definition: crop.h:47
index_t pad_width_
pad height
Definition: crop.h:45
int32_t index_t
type that will be used for index
Definition: base.h:343
const SrcExp & src_
source operand
Definition: crop.h:41
CroppingExp(const SrcExp &src, Shape< 2 > cshape)
constructor
Definition: crop.h:49
crop expression, cut off the boundary region, reverse operation of padding
Definition: crop.h:37
MSHADOW_XINLINE DType Eval(index_t i, index_t j) const
Definition: crop.h:121
defines how expression exp can be evaluated and stored into dst
Definition: expression.h:79
Plan< BinaryMapExp< OP, TA, TB, DType, etype >, DType > MakePlan(const BinaryMapExp< OP, TA, TB, DType, etype > &e)
Definition: expr_engine-inl.h:239
Plan(const CroppingExp< SrcExp, DType, srcdim > &e)
Definition: crop.h:117
a general class that allows extension that makes tensors of some shape
Definition: expr_engine-inl.h:43
overloaded + operator between half_t and bf16_t
Definition: base.h:334
Shape< dim > shape_
the shape of this expression
Definition: expr_engine-inl.h:47
index_t pad_height_
pad height
Definition: crop.h:43